So, I looked over my PS2 DVD, analyzing...
I found the files containered in hashed BIN files.
By Wiki I know, that R* used a modified GTA-SA-engine.
I also figured out to get a file list from a listfile:
MS_MisbehavingLow.rsm
EX_XmasTreeEmitter04.rsm
MS_CarnivalFunhouseAmbient.rsm
MS_RomanceHigh.rsm
MS_WIldstyleHigh.rsm
ArcRaceMXmidi02SPLASHBED01.rsm
MS_5-05_MeetZoe_NIS.rsm
MS_RunningMid.rsm
MS_Candidate.rsm
MS_EpicConfrontationHighPart2.rsm
ArcRaceMXmidi02SPLASH.rsm
MS_EnglishClassEnd.rsm
EX_BikeShopMX.rsm
MS_FinalShowdown03Low.rsm
ArcRaceMXmidi02SPLASHBED05.rsm
MS_EpicConfrontationLow.rsm
MS_StealthHigh.rsm
E_TatooTrailerMX.rsm
MS_FriendshipAllyHigh.rsm
MS_OnFootFailure.rsm
MS_CarnivalFunhouseMaze.rsm
MS_BikeFunMid.rsm
FIGHT01EndFade.rsm
MS_RussellInTheHole.rsm
MS_ChaseAdult.rsm
MS_3-B_ENDTAG.rsm
MS_ActionLow.rsm
MS_Misbehaving_NISPrankInfo.rsm
MS_StreetFightLargeLow_Boxing.rsm
MS_FinalShowdownMid.rsm
MS_Misbehaving_NISPrankSucess.rsm
E_HQMX_Dropouts.rsm
MS_TenementsLow.rsm
MS_BikeDay.rsm
MS_ActionMid.rsm
FIGHT01EFade.rsm
MS_InTroubleHigh.rsm
MS_PhotographyClass.rsm
MS_FinalShowdown03Mid.rsm
MS_RunningHigh.rsm
EX_XmasTreeEmitter03.rsm
MS_TenementsHigh.rsm
MS_NerdFight.rsm
MS_GoKart02.rsm
MS_EnglishClass.rsm
MS_FootStealthLow.rsm
ArcRaceMXmidi02Drive02.rsm
FIGHT01D.rsm
MS_HalloweenMid.rsm
E_HQMX_Jocks.rsm
MS_Ambient01.rsm
Arc_MonkeyFlingGame01.rsm
MS_SearchingHigh.rsm
MS_FightMid01.rsm
ArcRaceMXmidi02SPLASHBED06.rsm
MS_DestructionVandalismMid.rsm
MS_BoxingBossFight.rsm
MS_ShowdownAtThePlantLow.rsm
MS_ActionHigh.rsm
MS_BikeFailure.rsm
E_HairSaloonPoorMX.rsm
MS_SneakDate_Romantic.rsm
MS_FightingNerds.rsm
MS_Tired.rsm
ArcRaceMXmidi02LOSE01.rsm
MS_RunningLow02.rsm
MS_NerdPassStinger.rsm
ArcRaceMXmidi02LOSE02.rsm
MS_5-05_BurtonPee_NIS.rsm
ArcRaceMXmidi02SPLASHBED02.rsm
EX_ClothingStoreRichMX.rsm
MS_RomanceFailStinger.rsm
E_HairSaloonRichMX.rsm
MS_FightHigh02.rsm
MS_ChaseMid.rsm
MS_BikeChaseMid.rsm
MS_FearTensionMid.rsm
MS_ChaseLow.rsm
MS_FinalShowdown03High.rsm
MS_GenericStingFail.rsm
MS_BikeRace01.rsm
MS_FightingJohnnyVincentBikeRide.rsm
Arc_MonkeyFlingWin.rsm
MS_RomanceLow.rsm
MS_EpicConfrontationMid.rsm
MS_Carnival02.rsm
MS_BikeActionMid.rsm
ArcRaceMXmidi02WIN.rsm
MS_Confrontation_NIS.rsm
MS_BikeRace02.rsm
MS_FightingJohnnyVincentFight.rsm
MS_SearchingLow.rsm
EX_TatooTrailerMX.rsm
MS_InTroubleLow.rsm
Arc_SUMO_Win.rsm
ArcRaceMXmidi02SPLASHBED03.rsm
MS_StealthLow.rsm
MS_ClassSuccessStinger.rsm
FIGHT01F.rsm
MS_BikePractice.rsm
EX_ComicShopMX.rsm
Arc_FlyingSquirrelWin.rsm
MS_FinalShowdownHigh.rsm
EX_XmasTreeEmitter01.rsm
MS_RomancePassStinger.rsm
MS_HalloweenLow.rsm
Arc_MonkeyFlingMenu01.rsm
Arc_FlyingSquirrelGameMx01.rsm
MS_FightingPreps.rsm
MS_BikeFunHigh.rsm
MS_GoKarts01A.rsm
MS_FootStealthHigh.rsm
MS_FightingGeneric.rsm
MS_ClassFailureStinger.rsm
MS_JockBossBattle.rsm
MS_GoKart 01.rsm
MS_StreetFightLargeMid_Boxing.rsm
MS_FightingBullies.rsm
MS_BikeChaseHigh.rsm
FIGHT01C.rsm
Arc_MonkeyFlingGame02.rsm
MS_PrepFight.rsm
ArcRaceMXmidi02SPLASHBED04.rsm
MS_FightingJocks.rsm
EX_HairSaloonRichMX.rsm
MS_NerdBossBattle.rsm
MS_EnglishClassShort.rsm
Arc_MonkeyFlingGame03.rsm
MS_Fighting01.rsm
Arc_FlyingSquirrelGameMx03.rsm
EX_JanitorRoomMX.rsm
EX_HairSalonPoorMX.rsm
MS_ArtClass.rsm
Arc_FlyingSquirrelLose.rsm
MS_MisbehavingHigh.rsm
MS_NerdFailStinger.rsm
MS_StealthMidA.rsm
MS_FightingPrepsLow.rsm
E_JanitorRoomMX.rsm
MS_EpicConfrontationHigh.rsm
MS_ChaseHigh.rsm
MS_FightLow03.rsm
EX_ClothingStorePoorMX.rsm
MS_SneakDate_SexyGirl.rsm
MS_FootStealthMid.rsm
MS_FightMid03.rsm
MS_3B_JohhnyV_NIS.rsm
MS_BikeFastMid.rsm
MS_FriendshipAllyMid.rsm
Arc_FlyingSquirrelGameMx02.rsm
E_BoxClub_DownstairsMX.rsm
MS_GymClass.rsm
MS_5-09_CrowdNIS.rsm
MS_ActionBeatBreak.rsm
MS_FunHigh.rsm
MS_FightMid02.rsm
MS_FunLow.rsm
E_ComicShopMX.rsm
MS_FinalShowdownLow.rsm
MS_PunishmentDetention.rsm
MS_ChasePrefect.rsm
MS_BikeNight.rsm
Arc_SUMO_Menu.rsm
MS_FightingGreasers.rsm
MS_GoKarts02.rsm
MS_ActionHigh_NISReturn.rsm
MS_MisbehavingHigh_NIS03.rsm
MS_BikeFunLow.rsm
FIGHT01B.rsm
MS_GoKarts01B.rsm
MS_BikeFastLow.rsm
MS_FightingJohnnyVincentBossFight.rsm
E_BikeShopMX.rsm
E_HQMX_Nerds.rsm
MS_FightingDropouts.rsm
MS_GenericStingSuccess.rsm
MS_LockPicking.rsm
MS_MisbehavingHigh_NIS02.rsm
MS_6B_EndlessSummerCreditsNIS.rsm
MS_BoxingReg.rsm
Arc_MonkeyFlingMenu02.rsm
EX_XmasTreeEmitter02.rsm
MS_ShowdownAtThePlantHigh.rsm
Arc_MonkeyFlingLose.rsm
MS_MisbehavingMid.rsm
MS_StealthMid.rsm
MS_DestructionVandalismHigh.rsm
MS_ChasePolice.rsm
MS_FriendshipAllyLow.rsm
ArcRaceMXmidi02Drive01.rsm
E_GeneralStoreMX.rsm
FIGHT01A.rsm
MS_TenementsMid.rsm
MS_HalloweenHigh.rsm
MS_BikeActionHigh.rsm
MS_OnFootVictory.rsm
E_ClothingStorePoorMX.rsm
MS_Carnival01.rsm
MS_SearchingMid.rsm
MS_EpicConfrantation_NIS.rsm
MS_EpicConfrontationEnding.rsm
MS_MovieTixRomance.rsm
MS_ShopClass.rsm
MS_MissionEnd01.rsm
MS_WIldstyleLow.rsm
MS_CarnivalFunhouseMiner.rsm
MS_BikeChaseLow.rsm
MS_WIldstyleMid.rsm
MS_RomanceMid.rsm
E_ClothingStoreRichMX.rsm
MS_ChemistryClass.rsm
MS_DishonorableFight.rsm
Arc_SUMO_Lose.rsm
MS_BikeFastHigh.rsm
MS_BikeVictory.rsm
MS_RunningFight-2 MIX TR.rsm
Arc_SUMO_Game01.rsm
MS_MisbehavingHigh_NIS01.rsm
Arc_FlyingSquirrelMenu.rsm
MS_TensionBuilder01.rsm
MS_RunningLow.rsm
MS_BikeFun_NIS.rsm
E_HQMX_Preppies.rsm
MS_StreetFightLargeHigh_Boxing.rsm
MS_FunMid.rsm
EX_GeneralStoreMX.rsm
ArcRaceMXmidi02Drive03.rsm
... and now it's my mission to get the files out of MUSIC.BIN & MUSIC2.BIN
... I bought the soundtrack, but there are lots of songs missing!! (or on only credit card accepting mp3 stores. p2p doesn't work at work (fxxxing firewall)
...now googleing...