I have True Music, Tsar's Common Library, and TCCacheMP installed. But the cassette option in cars is missing, and i cant find any boomboxes or vinyl players. I have tried adding some True Music addons to try to make them show up but they aren't.

Update: I've managed to get the cassette option to show up in Single Player, but I'm trying to get it working in Multiplayer so I can play with my Friends.