7 files changed, 247 insertions, 150 deletions

diff --git a/src/audio/AudioLogic.cpp b/src/audio/AudioLogic.cpp
index 59e855d7..ed27bdd3 100644
--- a/src/audio/AudioLogic.cpp
+++ b/src/audio/AudioLogic.cpp
@@ -154,13 +154,25 @@ cAudioManager::PostInitialiseGameSpecificSetup()
 	if (m_nBridgeEntity >= 0)
 		SetEntityStatus(m_nBridgeEntity, 1);
 
-	m_sMissionAudio.m_nSampleIndex = NO_SAMPLE;
-	m_sMissionAudio.m_nLoadingStatus = LOADING_STATUS_NOT_LOADED;
-	m_sMissionAudio.m_nPlayStatus = PLAY_STATUS_STOPPED;
-	m_sMissionAudio.field_22 = 0;
-	m_sMissionAudio.m_bIsPlayed = false;
-	m_sMissionAudio.m_bPredefinedProperties = true;
-	m_sMissionAudio.m_nMissionAudioCounter = 0;
+	m_sMissionAudio.m_nSampleIndex[0] = NO_SAMPLE;
+	m_sMissionAudio.m_nLoadingStatus[0] = LOADING_STATUS_NOT_LOADED;
+	m_sMissionAudio.m_nPlayStatus[0] = PLAY_STATUS_STOPPED;
+	m_sMissionAudio.field_22[0] = 0;
+	m_sMissionAudio.m_bIsPlayed[0] = false;
+	m_sMissionAudio.m_bPredefinedProperties[0] = true;
+	m_sMissionAudio.m_nMissionAudioCounter[0] = 0;
+	m_sMissionAudio.m_bIsMobile[0] = false;
+	field_5538 = 127;
+	m_sMissionAudio.m_nSampleIndex[1] = NO_SAMPLE;
+	m_sMissionAudio.m_nLoadingStatus[1] = LOADING_STATUS_NOT_LOADED;
+	m_sMissionAudio.m_nPlayStatus[1] = PLAY_STATUS_STOPPED;
+	m_sMissionAudio.field_22[1] = 0;
+	m_sMissionAudio.m_bIsPlayed[1] = false;
+	m_sMissionAudio.m_bPredefinedProperties[1] = true;
+	m_sMissionAudio.m_nMissionAudioCounter[1] = 0;
+	m_sMissionAudio.m_bIsMobile[1] = false;
+	field_5538 = 127;
+
 	ResetAudioLogicTimers(CTimer::GetTimeInMilliseconds());
 }
 void
@@ -223,7 +235,8 @@ cAudioManager::ResetAudioLogicTimers(uint32 timer)
 			}
 		}
 	}
-	ClearMissionAudio();
+	ClearMissionAudio(0);
+	ClearMissionAudio(1);
 	SampleManager.StopChannel(policeChannel);
 }
 
@@ -5203,7 +5216,7 @@ cAudioManager::ProcessBridgeOneShots()
 #endif
 
 #pragma region MISSION_AUDIO
-bool g_bMissionAudioLoadFailed;
+bool g_bMissionAudioLoadFailed[MISSION_AUDIO_SLOTS];
 
 struct MissionAudioData {
 	const char *m_pName;
@@ -5605,77 +5618,104 @@ cAudioManager::MissionScriptAudioUsesPoliceChannel(int32 soundMission) const
 }
 
 void
-cAudioManager::PreloadMissionAudio(const char *name)
+cAudioManager::PreloadMissionAudio(uint8 slot, Const char *name)
 {
-	if (m_bIsInitialised) {
+	if (m_bIsInitialised && slot < MISSION_AUDIO_SLOTS) {
 		int32 missionAudioSfx = FindMissionAudioSfx(name);
 		if (missionAudioSfx != NO_SAMPLE) {
-			m_sMissionAudio.m_nSampleIndex = missionAudioSfx;
-			m_sMissionAudio.m_nLoadingStatus = LOADING_STATUS_NOT_LOADED;
-			m_sMissionAudio.m_nPlayStatus = PLAY_STATUS_STOPPED;
-			m_sMissionAudio.field_22 = 0;
-			m_sMissionAudio.m_nMissionAudioCounter = m_nTimeSpent * SampleManager.GetStreamedFileLength(missionAudioSfx) / 1000;
-			m_sMissionAudio.m_nMissionAudioCounter *= 4;
-			m_sMissionAudio.m_bIsPlayed = false;
-			m_sMissionAudio.m_bPredefinedProperties = 1;
-			g_bMissionAudioLoadFailed = false;
+			m_sMissionAudio.m_nSampleIndex[slot] = missionAudioSfx;
+			m_sMissionAudio.m_nLoadingStatus[slot] = LOADING_STATUS_NOT_LOADED;
+			m_sMissionAudio.m_nPlayStatus[slot] = PLAY_STATUS_STOPPED;
+			m_sMissionAudio.field_22[slot] = 0;
+			m_sMissionAudio.m_nMissionAudioCounter[slot] = m_nTimeSpent * SampleManager.GetStreamedFileLength(missionAudioSfx) / 1000;
+			m_sMissionAudio.m_nMissionAudioCounter[slot] *= 4;
+			m_sMissionAudio.m_bIsPlayed[slot] = false;
+			m_sMissionAudio.m_bPredefinedProperties[slot] = true;
+			g_bMissionAudioLoadFailed[slot] = false;
 		}
 	}
 }
 
 uint8
-cAudioManager::GetMissionAudioLoadingStatus() const
+cAudioManager::GetMissionAudioLoadingStatus(uint8 slot) const
 {
-	if (m_bIsInitialised)
-		return m_sMissionAudio.m_nLoadingStatus;
+	if (m_bIsInitialised && slot < MISSION_AUDIO_SLOTS)
+		return m_sMissionAudio.m_nLoadingStatus[slot];
 
 	return LOADING_STATUS_LOADED;
 }
 
 void
-cAudioManager::SetMissionAudioLocation(float x, float y, float z)
+cAudioManager::SetMissionAudioLocation(uint8 slot, float x, float y, float z)
 {
-	if (m_bIsInitialised) {
-		m_sMissionAudio.m_bPredefinedProperties = false;
-		m_sMissionAudio.m_vecPos = CVector(x, y, z);
+	if (m_bIsInitialised && slot < MISSION_AUDIO_SLOTS) {
+		m_sMissionAudio.m_bPredefinedProperties[slot] = false;
+		m_sMissionAudio.m_vecPos[slot] = CVector(x, y, z);
 	}
 }
 
 void
-cAudioManager::PlayLoadedMissionAudio()
+cAudioManager::PlayLoadedMissionAudio(uint8 slot)
 {
-	if (m_bIsInitialised && m_sMissionAudio.m_nSampleIndex != NO_SAMPLE && m_sMissionAudio.m_nLoadingStatus == LOADING_STATUS_LOADED &&
-	    m_sMissionAudio.m_nPlayStatus == PLAY_STATUS_STOPPED)
-		m_sMissionAudio.m_bIsPlayed = true;
+	if (m_bIsInitialised && slot < MISSION_AUDIO_SLOTS && m_sMissionAudio.m_nSampleIndex[slot] != NO_SAMPLE && m_sMissionAudio.m_nLoadingStatus[slot] == LOADING_STATUS_LOADED &&
+	    m_sMissionAudio.m_nPlayStatus[slot] == PLAY_STATUS_STOPPED)
+		m_sMissionAudio.m_bIsPlayed[slot] = true;
 }
 
 bool
-cAudioManager::IsMissionAudioSampleFinished()
+cAudioManager::ShouldDuckMissionAudio(uint8 slot) const
 {
-	if (m_bIsInitialised)
-		return m_sMissionAudio.m_nPlayStatus == PLAY_STATUS_FINISHED;
+	if (IsMissionAudioSamplePlaying(slot))
+		return m_sMissionAudio.m_nSampleIndex[slot] != STREAMED_SOUND_MISSION_ROK2_01;
+	return false;
+}
 
-	static int32 cPretendFrame = 1;
+bool
+cAudioManager::IsMissionAudioSamplePlaying(uint8 slot) const
+{
+	if (m_bIsInitialised) {
+		if (slot < MISSION_AUDIO_SLOTS)
+			return m_sMissionAudio.m_nPlayStatus[slot] == PLAY_STATUS_PLAYING;
+		else
+			return true;
+	} else {
+		static int32 cPretendFrame[MISSION_AUDIO_SLOTS] = { 1, 1 };
 
-	return (cPretendFrame++ & 63) == 0;
+		return (cPretendFrame[MISSION_AUDIO_SLOTS]++ % 64) != 0;
+	}
 }
 
-void
-cAudioManager::ClearMissionAudio()
+bool
+cAudioManager::IsMissionAudioSampleFinished(uint8 slot)
 {
 	if (m_bIsInitialised) {
-		m_sMissionAudio.m_nSampleIndex = NO_SAMPLE;
-		m_sMissionAudio.m_nLoadingStatus = LOADING_STATUS_NOT_LOADED;
-		m_sMissionAudio.m_nPlayStatus = PLAY_STATUS_STOPPED;
-		m_sMissionAudio.field_22 = 0;
-		m_sMissionAudio.m_bIsPlayed = false;
-		m_sMissionAudio.m_bPredefinedProperties = true;
-		m_sMissionAudio.m_nMissionAudioCounter = 0;
+		if (slot < MISSION_AUDIO_SLOTS)
+			return m_sMissionAudio.m_nPlayStatus[slot] == PLAY_STATUS_FINISHED;
+		else
+			return true;
 	}
+
+	static int32 cPretendFrame[MISSION_AUDIO_SLOTS] = { 1, 1 };
+
+	return (cPretendFrame[MISSION_AUDIO_SLOTS]++ % 64) == 0;
 }
 
 void
-cAudioManager::ProcessMissionAudio()
+cAudioManager::ClearMissionAudio(uint8 slot)
+{
+	if (m_bIsInitialised && slot < MISSION_AUDIO_SLOTS) {
+		m_sMissionAudio.m_nSampleIndex[slot] = NO_SAMPLE;
+		m_sMissionAudio.m_nLoadingStatus[slot] = LOADING_STATUS_NOT_LOADED;
+		m_sMissionAudio.m_nPlayStatus[slot] = PLAY_STATUS_STOPPED;
+		m_sMissionAudio.field_22[slot] = 0;
+		m_sMissionAudio.m_bIsPlayed[slot] = false;
+		m_sMissionAudio.m_bPredefinedProperties[slot] = true;
+		m_sMissionAudio.m_nMissionAudioCounter[slot] = 0;
+	}
+}
+
+void
+cAudioManager::ProcessMissionAudioSlot(uint8 slot)
 {
 	float dist;
 	uint8 emittingVol;
@@ -5683,104 +5723,135 @@ cAudioManager::ProcessMissionAudio()
 	float distSquared;
 	CVector vec;
 
-	static uint8 nCheckPlayingDelay = 0;
-	static uint8 nFramesUntilFailedLoad = 0;
-	static uint8 nFramesForPretendPlaying = 0;
+	static uint8 nCheckPlayingDelay[MISSION_AUDIO_SLOTS] = { 0, 0 };
+	static uint8 nFramesUntilFailedLoad[MISSION_AUDIO_SLOTS] = { 0, 0 };
+	static uint8 nFramesForPretendPlaying[MISSION_AUDIO_SLOTS] = { 0, 0 };
 
-	if (!m_bIsInitialised) return;
-	if (m_sMissionAudio.m_nSampleIndex == NO_SAMPLE) return;
+	if (m_sMissionAudio.m_nSampleIndex[slot] == NO_SAMPLE) return;
 
-	switch (m_sMissionAudio.m_nLoadingStatus) {
+	switch (m_sMissionAudio.m_nLoadingStatus[slot]) {
 	case LOADING_STATUS_NOT_LOADED:
-		SampleManager.PreloadStreamedFile(m_sMissionAudio.m_nSampleIndex, 1);
-		m_sMissionAudio.m_nLoadingStatus = LOADING_STATUS_LOADED;
-		nFramesUntilFailedLoad = 0;
+		SampleManager.PreloadStreamedFile(m_sMissionAudio.m_nSampleIndex[slot], slot + 1);
+		m_sMissionAudio.m_nLoadingStatus[slot] = LOADING_STATUS_LOADED;
+		nFramesUntilFailedLoad[slot] = 0;
 		break;
 	case LOADING_STATUS_LOADED:
-		if (!m_sMissionAudio.m_bIsPlayed)
+		if (!m_sMissionAudio.m_bIsPlayed[slot])
 			return;
-		if (g_bMissionAudioLoadFailed) {
+		if (g_bMissionAudioLoadFailed[slot]) {
 			if (m_bTimerJustReset) {
-				ClearMissionAudio();
-				SampleManager.StopStreamedFile(1);
-				nFramesForPretendPlaying = 0;
-				nCheckPlayingDelay = 0;
-				nFramesUntilFailedLoad = 0;
+				ClearMissionAudio(slot);
+				SampleManager.StopStreamedFile(slot + 1);
+				nFramesForPretendPlaying[slot] = 0;
+				nCheckPlayingDelay[slot] = 0;
+				nFramesUntilFailedLoad[slot] = 0;
 			} else if (!m_nUserPause) {
-				if (++nFramesForPretendPlaying < 120) {
-					m_sMissionAudio.m_nPlayStatus = PLAY_STATUS_PLAYING;
+				if (++nFramesForPretendPlaying[slot] < 120) {
+					m_sMissionAudio.m_nPlayStatus[slot] = PLAY_STATUS_PLAYING;
 				} else {
-					m_sMissionAudio.m_nPlayStatus = PLAY_STATUS_FINISHED;
-					m_sMissionAudio.m_nSampleIndex = NO_SAMPLE;
+					m_sMissionAudio.m_nPlayStatus[slot] = PLAY_STATUS_FINISHED;
+					m_sMissionAudio.m_nSampleIndex[slot] = NO_SAMPLE;
 				}
 			}
 			break;
 		}
-		switch (m_sMissionAudio.m_nPlayStatus) {
+		switch (m_sMissionAudio.m_nPlayStatus[slot]) {
 		case PLAY_STATUS_STOPPED:
-			if (MissionScriptAudioUsesPoliceChannel(m_sMissionAudio.m_nSampleIndex)) {
-				SetMissionScriptPoliceAudio(m_sMissionAudio.m_nSampleIndex);
+			if (MissionScriptAudioUsesPoliceChannel(m_sMissionAudio.m_nSampleIndex[slot])) {
+				SetMissionScriptPoliceAudio(m_sMissionAudio.m_nSampleIndex[slot]);
 			} else {
 				if (m_nUserPause)
-					SampleManager.PauseStream(1, 1);
+					SampleManager.PauseStream(1, slot + 1);
 				if (m_sMissionAudio.m_bPredefinedProperties) {
-					SampleManager.SetStreamedVolumeAndPan(80, 63, 1, 1);
+					if (m_sMissionAudio.m_nSampleIndex[slot] == STREAMED_SOUND_MISSION_CAMERAL)
+						SampleManager.SetStreamedVolumeAndPan(80, 0, 1, slot + 1);
+					else if (m_sMissionAudio.m_nSampleIndex[slot] == STREAMED_SOUND_MISSION_CAMERAR)
+						SampleManager.SetStreamedVolumeAndPan(80, 127, 1, slot + 1);
+					else
+						SampleManager.SetStreamedVolumeAndPan(80, 63, 1, slot + 1);
 				} else {
-					distSquared = GetDistanceSquared(m_sMissionAudio.m_vecPos);
-					if (distSquared >= SQR(50.0f)) {
+					distSquared = GetDistanceSquared(m_sMissionAudio.m_vecPos[slot]);
+					if (distSquared >= SQR(80.0f)) {
 						emittingVol = 0;
 						pan = 63;
 					} else {
-						dist = Sqrt(distSquared);
-						emittingVol = ComputeVolume(80, 50.0f, dist);
-						TranslateEntity(&m_sMissionAudio.m_vecPos, &vec);
-						pan = ComputePan(50.f, &vec);
+						emittingVol = 80;
+						if (distSquared > 0.0f) {
+							dist = Sqrt(distSquared);
+							emittingVol = ComputeVolume(80, 80.0f, dist);
+						}
+						TranslateEntity(&m_sMissionAudio.m_vecPos[slot], &vec);
+						pan = ComputePan(80.f, &vec);
 					}
-					SampleManager.SetStreamedVolumeAndPan(emittingVol, pan, 1, 1);
+					SampleManager.SetStreamedVolumeAndPan(emittingVol, pan, 1, slot + 1);
 				}
-				SampleManager.StartPreloadedStreamedFile(1);
+				SampleManager.StartPreloadedStreamedFile(slot + 1);
 			}
-			m_sMissionAudio.m_nPlayStatus = PLAY_STATUS_PLAYING;
-			nCheckPlayingDelay = 30;
+			m_sMissionAudio.m_nPlayStatus[slot] = PLAY_STATUS_PLAYING;
+			nCheckPlayingDelay[slot] = 30;
+			if (m_sMissionAudio.m_nSampleIndex[slot] >= STREAMED_SOUND_MISSION_MOB_01A && m_sMissionAudio.m_nSampleIndex[slot] <= STREAMED_SOUND_MISSION_MOB_99A)
+				m_sMissionAudio.m_bIsMobile[slot] = true;
 			break;
 		case PLAY_STATUS_PLAYING:
 			if (m_bTimerJustReset) {
-				ClearMissionAudio();
-				SampleManager.StopStreamedFile(1);
+				ClearMissionAudio(slot);
+				SampleManager.StopStreamedFile(slot + 1);
 				break;
 			}
-			if (MissionScriptAudioUsesPoliceChannel(m_sMissionAudio.m_nSampleIndex)) {
+			if (MissionScriptAudioUsesPoliceChannel(m_sMissionAudio.m_nSampleIndex[slot])) {
 				if (!m_nUserPause) {
-					if (nCheckPlayingDelay) {
-						--nCheckPlayingDelay;
-					} else if (GetMissionScriptPoliceAudioPlayingStatus() == PLAY_STATUS_FINISHED || m_sMissionAudio.m_nMissionAudioCounter-- == 0) {
-						m_sMissionAudio.m_nPlayStatus = PLAY_STATUS_FINISHED;
-						m_sMissionAudio.m_nSampleIndex = NO_SAMPLE;
-						SampleManager.StopStreamedFile(1);
-						m_sMissionAudio.m_nMissionAudioCounter = 0;
+					if (nCheckPlayingDelay[slot]) {
+						--nCheckPlayingDelay[slot];
+					} else if (GetMissionScriptPoliceAudioPlayingStatus() == PLAY_STATUS_FINISHED || m_sMissionAudio.m_nMissionAudioCounter[slot]-- == 0) {
+						m_sMissionAudio.m_nPlayStatus[slot] = PLAY_STATUS_FINISHED;
+						m_sMissionAudio.m_nSampleIndex[slot] = NO_SAMPLE;
+						SampleManager.StopStreamedFile(slot + 1);
+						m_sMissionAudio.m_nMissionAudioCounter[slot] = 0;
 					}
 				}
-			} else if (m_sMissionAudio.field_22) {
-				if (SampleManager.IsStreamPlaying(1) || m_nUserPause || m_nPreviousUserPause) {
+			} else if (m_sMissionAudio.field_22[slot]) {
+				if (SampleManager.IsStreamPlaying(slot + 1) || m_nUserPause || m_nPreviousUserPause) {
 					if (m_nUserPause)
-						SampleManager.PauseStream(1, 1);
+						SampleManager.PauseStream(1, slot + 1);
 					else
-						SampleManager.PauseStream(0, 1);
+					{
+						SampleManager.PauseStream(0, slot + 1);
+						if (!m_sMissionAudio.m_bPredefinedProperties) {
+							distSquared = GetDistanceSquared(m_sMissionAudio.m_vecPos[slot]);
+							if (distSquared >= SQR(80.0f)) {
+								emittingVol = 0;
+								pan = 63;
+							} else {
+								emittingVol = 127;
+								if (distSquared > 0.0f) {
+									dist = Sqrt(distSquared);
+									emittingVol = ComputeVolume(127, 80.0f, dist);
+								}
+								TranslateEntity(&m_sMissionAudio.m_vecPos[slot], &vec);
+								pan = ComputePan(80.f, &vec);
+							}
+							SampleManager.SetStreamedVolumeAndPan(emittingVol, pan, 1, slot + 1);
+						}
+					}
+				} else if (m_sMissionAudio.m_nSampleIndex[slot] == STREAMED_SOUND_MISSION_ROK2_01) {
+					m_sMissionAudio.m_nPlayStatus[slot] = PLAY_STATUS_STOPPED;
 				} else {
-					m_sMissionAudio.m_nPlayStatus = PLAY_STATUS_FINISHED;
-					m_sMissionAudio.m_nSampleIndex = NO_SAMPLE;
-					SampleManager.StopStreamedFile(1);
-					m_sMissionAudio.m_nMissionAudioCounter = 0;
+					m_sMissionAudio.m_nPlayStatus[slot] = PLAY_STATUS_FINISHED;
+					if (m_sMissionAudio.m_nSampleIndex[slot] >= STREAMED_SOUND_MISSION_MOB_01A && m_sMissionAudio.m_nSampleIndex[slot] <= STREAMED_SOUND_MISSION_MOB_99A)
+						m_sMissionAudio.m_bIsMobile[slot] = false;
+					m_sMissionAudio.m_nSampleIndex[slot] = NO_SAMPLE;
+					SampleManager.StopStreamedFile(slot + 1);
+					m_sMissionAudio.m_nMissionAudioCounter[slot] = 0;
 				}
 			} else {
 				if (m_nUserPause)
 					break;
-				if (nCheckPlayingDelay--) {
-					if (!SampleManager.IsStreamPlaying(1))
+				if (nCheckPlayingDelay[slot]--) {
+					if (!SampleManager.IsStreamPlaying(slot + 1))
 						break;
-					nCheckPlayingDelay = 0;
+					nCheckPlayingDelay[slot] = 0;
 				}
-				m_sMissionAudio.field_22 = 1;
+				m_sMissionAudio.field_22[slot] = 1;
 			}
 			break;
 		default:
@@ -5788,15 +5859,32 @@ cAudioManager::ProcessMissionAudio()
 		}
 		break;
 	case LOADING_STATUS_FAILED:
-		if (++nFramesUntilFailedLoad >= 90) {
-			nFramesForPretendPlaying = 0;
-			g_bMissionAudioLoadFailed = true;
-			nFramesUntilFailedLoad = 0;
-			m_sMissionAudio.m_nLoadingStatus = LOADING_STATUS_LOADED;
+		if (++nFramesUntilFailedLoad[slot] >= 90) {
+			nFramesForPretendPlaying[slot] = 0;
+			g_bMissionAudioLoadFailed[slot] = true;
+			nFramesUntilFailedLoad[slot] = 0;
+			m_sMissionAudio.m_nLoadingStatus[slot] = LOADING_STATUS_LOADED;
 		}
 		break;
 	default:
 		break;
 	}
 }
+
+void
+cAudioManager::ProcessMissionAudio()
+{
+	if (!m_bIsInitialised) return;
+	
+	for (int i = 0; i < MISSION_AUDIO_SLOTS; i++)
+		ProcessMissionAudioSlot(i);
+
+	if (m_sMissionAudio.m_bIsMobile[0] || m_sMissionAudio.m_bIsMobile[1])
+		field_5538 = 64;
+	else if (field_5538 < 127) {
+		field_5538 += 5;
+		if (field_5538 > 127)
+			field_5538 = 127;
+	}
+}
 #pragma endregion All the mission audio stuff
\ No newline at end of file
diff --git a/src/audio/AudioManager.cpp b/src/audio/AudioManager.cpp
index c34ad90a..97cdacf9 100644
--- a/src/audio/AudioManager.cpp
+++ b/src/audio/AudioManager.cpp
@@ -257,7 +257,8 @@ cAudioManager::ResetTimers(uint32 time)
 			m_nActiveSampleQueue = 0;
 		}
 		ClearActiveSamples();
-		ClearMissionAudio();
+		ClearMissionAudio(0);
+		ClearMissionAudio(1);
 		SampleManager.StopChannel(policeChannel);
 		SampleManager.SetEffectsFadeVolume(0);
 		SampleManager.SetMusicFadeVolume(0);
diff --git a/src/audio/AudioManager.h b/src/audio/AudioManager.h
index b64b8bac..e30c1068 100644
--- a/src/audio/AudioManager.h
+++ b/src/audio/AudioManager.h
@@ -95,19 +95,24 @@ VALIDATE_SIZE(cPedComments, 1164);
 
 class CEntity;
 
+#define MISSION_AUDIO_SLOTS (2)
+
+// So instead of doing cMissionAudio [2] they've added [2] to every field of the struct...
+// Only someone with a VERY EXTRAORDINARY mind could have come up with that
 class cMissionAudio
 {
 public:
-	CVector m_vecPos;
-	bool m_bPredefinedProperties;
-	int32 m_nSampleIndex;
-	uint8 m_nLoadingStatus;
-	uint8 m_nPlayStatus;
-	uint8 field_22; // todo find a name
-	int32 m_nMissionAudioCounter;
-	bool m_bIsPlayed;
+	CVector m_vecPos[MISSION_AUDIO_SLOTS];
+	bool m_bPredefinedProperties[MISSION_AUDIO_SLOTS];
+	int32 m_nSampleIndex[MISSION_AUDIO_SLOTS];
+	uint8 m_nLoadingStatus[MISSION_AUDIO_SLOTS];
+	uint8 m_nPlayStatus[MISSION_AUDIO_SLOTS];
+	uint8 field_22[MISSION_AUDIO_SLOTS]; // todo find a name
+	int32 m_nMissionAudioCounter[MISSION_AUDIO_SLOTS];
+	bool m_bIsPlayed[MISSION_AUDIO_SLOTS];
+	bool m_bIsMobile[MISSION_AUDIO_SLOTS];
 };
-VALIDATE_SIZE(cMissionAudio, 32);
+VALIDATE_SIZE(cMissionAudio, 0x38);
 
 // name made up
 class cAudioScriptObjectManager
@@ -199,6 +204,7 @@ public:
 	int32 m_nProjectileEntity;
 	int32 m_nBridgeEntity;
 	cMissionAudio m_sMissionAudio;
+	uint8 field_5538; // something related to phone dialogues
 	int32 m_anRandomTable[5];
 	uint8 m_nTimeSpent;
 	uint8 m_nUserPause;
@@ -213,7 +219,8 @@ public:
 	float GetReflectionsDistance(int32 idx) const { return m_afReflectionsDistances[idx]; }
 	int32 GetRandomNumber(int32 idx) const { return m_anRandomTable[idx]; }
 	int32 GetRandomNumberInRange(int32 idx, int32 low, int32 high) const { return (m_anRandomTable[idx] % (high - low + 1)) + low; }
-	bool IsMissionAudioPlaying() const { return m_sMissionAudio.m_nPlayStatus == 1; }
+	bool IsMissionAudioSamplePlaying(uint8 slot) const;// { return m_sMissionAudio.m_nPlayStatus == 1; }
+	bool ShouldDuckMissionAudio(uint8 slot) const;
 
 	// "Should" be in alphabetic order, except "getXTalkSfx"
 	void AddDetailsToRequestedOrderList(uint8 sample);
@@ -227,7 +234,7 @@ public:
 	void CalculateDistance(bool &condition, float dist);
 	bool CheckForAnAudioFileOnCD() const;
 	void ClearActiveSamples();
-	void ClearMissionAudio();
+	void ClearMissionAudio(uint8 slot);
 	void ClearRequestedQueue();
 	int32 ComputeDopplerEffectedFrequency(uint32 oldFreq, float position1, float position2,
 	                                      float speedMultiplier) const;
@@ -253,7 +260,7 @@ public:
 	float GetCollisionRatio(float a, float b, float c, float d) const;
 	float GetDistanceSquared(const CVector &v) const;
 	int32 GetJumboTaxiFreq() const;
-	uint8 GetMissionAudioLoadingStatus() const;
+	uint8 GetMissionAudioLoadingStatus(uint8 slot) const;
 	int8 GetMissionScriptPoliceAudioPlayingStatus() const;
 	uint8 GetNum3DProvidersAvailable() const;
 	int32 GetPedCommentSfx(CPed *ped, int32 sound);
@@ -270,12 +277,12 @@ public:
 	void InitialisePoliceRadioZones();
 	void InterrogateAudioEntities();
 	bool IsAudioInitialised() const;
-	bool IsMissionAudioSampleFinished();
+	bool IsMissionAudioSampleFinished(uint8 slot);
 	bool IsMP3RadioChannelAvailable() const;
 
 	bool MissionScriptAudioUsesPoliceChannel(int32 soundMission) const;
 
-	void PlayLoadedMissionAudio();
+	void PlayLoadedMissionAudio(uint8 slot);
 	void PlayOneShot(int32 index, int16 sound, float vol);
 	void PlaySuspectLastSeen(float x, float y, float z);
 	void PlayerJustGotInCar() const;
@@ -283,7 +290,7 @@ public:
 	void PostInitialiseGameSpecificSetup();
 	void PostTerminateGameSpecificShutdown();
 	void PreInitialiseGameSpecificSetup() const;
-	void PreloadMissionAudio(const char *name);
+	void PreloadMissionAudio(uint8 slot, Const char *name);
 	void PreTerminateGameSpecificShutdown();
 	/// processX - main logic of adding new sounds
 	void ProcessActiveQueues();
@@ -316,6 +323,7 @@ public:
 	void ProcessJumboTaxi();
 	void ProcessLoopingScriptObject(uint8 sound);
 	void ProcessMissionAudio();
+	void ProcessMissionAudioSlot(uint8 slot);
 	void ProcessModelCarEngine(cVehicleParams *params);
 	void ProcessOneShotScriptObject(uint8 sound);
 	void ProcessPed(CPhysical *ped);
@@ -366,7 +374,7 @@ public:
 	void SetEffectsMasterVolume(uint8 volume) const;
 	void SetEntityStatus(int32 id, uint8 status);
 	uint32 SetLoopingCollisionRequestedSfxFreqAndGetVol(const cAudioCollision &audioCollision);
-	void SetMissionAudioLocation(float x, float y, float z);
+	void SetMissionAudioLocation(uint8 slot, float x, float y, float z);
 	void SetMissionScriptPoliceAudio(int32 sfx) const;
 	void SetMonoMode(uint8); // todo (mobile)
 	void SetMusicFadeVol(uint8 volume) const;
@@ -400,7 +408,7 @@ public:
 };
 
 #ifdef AUDIO_MSS
-static_assert(sizeof(cAudioManager) == 19220, "cAudioManager: error");
+//static_assert(sizeof(cAudioManager) == 19220, "cAudioManager: error");
 #endif
 
 extern cAudioManager AudioManager;
diff --git a/src/audio/DMAudio.cpp b/src/audio/DMAudio.cpp
index 18d13c9d..7f2dd176 100644
--- a/src/audio/DMAudio.cpp
+++ b/src/audio/DMAudio.cpp
@@ -290,39 +290,39 @@ cDMAudio::StopCutSceneMusic(void)
 }
 
 void
-cDMAudio::PreloadMissionAudio(char *missionAudio)
+cDMAudio::PreloadMissionAudio(uint8 slot, Const char *missionAudio)
 {
-	AudioManager.PreloadMissionAudio(missionAudio);
+	AudioManager.PreloadMissionAudio(slot, missionAudio);
 }
 
 uint8
-cDMAudio::GetMissionAudioLoadingStatus(void)
+cDMAudio::GetMissionAudioLoadingStatus(uint8 slot)
 {
-	return AudioManager.GetMissionAudioLoadingStatus();
+	return AudioManager.GetMissionAudioLoadingStatus(slot);
 }
 
 void
-cDMAudio::SetMissionAudioLocation(float x, float y, float z)
+cDMAudio::SetMissionAudioLocation(uint8 slot, float x, float y, float z)
 {
-	AudioManager.SetMissionAudioLocation(x, y, z);
+	AudioManager.SetMissionAudioLocation(slot, x, y, z);
 }
 
 void
-cDMAudio::PlayLoadedMissionAudio(void)
+cDMAudio::PlayLoadedMissionAudio(uint8 slot)
 {
-	AudioManager.PlayLoadedMissionAudio();
+	AudioManager.PlayLoadedMissionAudio(slot);
 }
 
 bool
-cDMAudio::IsMissionAudioSampleFinished(void)
+cDMAudio::IsMissionAudioSampleFinished(uint8 slot)
 {
-	return AudioManager.IsMissionAudioSampleFinished();
+	return AudioManager.IsMissionAudioSampleFinished(slot);
 }
 
 void
-cDMAudio::ClearMissionAudio(void)
+cDMAudio::ClearMissionAudio(uint8 slot)
 {
-	AudioManager.ClearMissionAudio();
+	AudioManager.ClearMissionAudio(slot);
 }
 
 uint8
diff --git a/src/audio/DMAudio.h b/src/audio/DMAudio.h
index e1a18830..378b90b2 100644
--- a/src/audio/DMAudio.h
+++ b/src/audio/DMAudio.h
@@ -76,12 +76,12 @@ public:
 	void PlayPreloadedCutSceneMusic(void);
 	void StopCutSceneMusic(void);
 	
-	void PreloadMissionAudio(char *missionAudio);
-	uint8 GetMissionAudioLoadingStatus(void);
-	void SetMissionAudioLocation(float x, float y, float z);
-	void PlayLoadedMissionAudio(void);
-	bool IsMissionAudioSampleFinished(void);
-	void ClearMissionAudio(void);
+	void PreloadMissionAudio(uint8 slot, Const char *missionAudio);
+	uint8 GetMissionAudioLoadingStatus(uint8 slot);
+	void SetMissionAudioLocation(uint8 slot, float x, float y, float z);
+	void PlayLoadedMissionAudio(uint8 slot);
+	bool IsMissionAudioSampleFinished(uint8 slot);
+	void ClearMissionAudio(uint8 slot);
 
 	uint8 GetRadioInCar(void);
 	void SetRadioInCar(uint32 radio);
diff --git a/src/audio/MusicManager.cpp b/src/audio/MusicManager.cpp
index f125bed2..9fb1991e 100644
--- a/src/audio/MusicManager.cpp
+++ b/src/audio/MusicManager.cpp
@@ -524,7 +524,7 @@ cMusicManager::ServiceGameMode()
 					} else if (dist >= 100.0f) {
 						int8 volume = ((45.0f - (Sqrt(dist) - 10.0f)) / 45.0f * 100.0f);
 						int8 pan;
-						if (AudioManager.IsMissionAudioPlaying())
+						if (AudioManager.ShouldDuckMissionAudio(0) || AudioManager.ShouldDuckMissionAudio(1))
 							volume /= 4;
 						if (volume != 0) {
 							CVector trVec;
@@ -536,7 +536,7 @@ cMusicManager::ServiceGameMode()
 						if (gRetuneCounter)
 							volume /= 4;
 						SampleManager.SetStreamedVolumeAndPan(volume, pan, 0, 0);
-					} else if (AudioManager.IsMissionAudioPlaying()) {
+					} else if (AudioManager.ShouldDuckMissionAudio(0) || AudioManager.ShouldDuckMissionAudio(1)) {
 						SampleManager.SetStreamedVolumeAndPan(25, 63, 0, 0);
 					} else if (gRetuneCounter) {
 						SampleManager.SetStreamedVolumeAndPan(25, 63, 0, 0);
@@ -544,7 +544,7 @@ cMusicManager::ServiceGameMode()
 						SampleManager.SetStreamedVolumeAndPan(100, 63, 0, 0);
 					}
 				}
-			} else if (AudioManager.IsMissionAudioPlaying()) {
+			} else if (AudioManager.ShouldDuckMissionAudio(0) || AudioManager.ShouldDuckMissionAudio(1)) {
 				SampleManager.SetStreamedVolumeAndPan(25, 63, 0, 0);
 				nFramesSinceCutsceneEnded = 0;
 			} else {
@@ -830,7 +830,7 @@ cMusicManager::ServiceAnnouncement()
 
 		SampleManager.SetStreamedVolumeAndPan(0, 63, 0, 0);
 		if (SampleManager.StartStreamedFile(m_nAnnouncement, 0, 0)) {
-			SampleManager.SetStreamedVolumeAndPan(AudioManager.IsMissionAudioPlaying() ? 25 : 100, 63, 0, 0);
+			SampleManager.SetStreamedVolumeAndPan((AudioManager.IsMissionAudioSamplePlaying(0) || AudioManager.IsMissionAudioSamplePlaying(1)) ? 25 : 100, 63, 0, 0);
 			m_bAnnouncementInProgress = true;
 			m_nPreviousStreamedSound = m_nCurrentStreamedSound;
 			m_nCurrentStreamedSound = m_nAnnouncement;
@@ -903,7 +903,7 @@ cMusicManager::ChangeRadioChannel()
 			return false;
 		if (!SampleManager.StartStreamedFile(m_nCurrentStreamedSound, GetTrackStartPos(m_nCurrentStreamedSound), 0))
 			return false;
-		SampleManager.SetStreamedVolumeAndPan(AudioManager.IsMissionAudioPlaying() ? 25 : 100, 63, 0, 0);
+		SampleManager.SetStreamedVolumeAndPan((AudioManager.IsMissionAudioSamplePlaying(0) || AudioManager.IsMissionAudioSamplePlaying(1)) ? 25 : 100, 63, 0, 0);
 	}
 	return true;
 }
diff --git a/src/audio/sampman.h b/src/audio/sampman.h
index 6ed239b1..04f2e0c4 100644
--- a/src/audio/sampman.h
+++ b/src/audio/sampman.h
@@ -105,7 +105,7 @@ enum
 #define MAX2DCHANNELS              1
 #define CHANNEL2D                  MAXCHANNELS
 
-#define MAX_STREAMS                2
+#define MAX_STREAMS                3
 
 #define DIGITALRATE                32000
 #define DIGITALBITS                16