Hey, I've got a problem which i can't hear any radio stations in the Japanese version of the game. The stations are working perfectly like it should on the normal version of the game. Its really weird and i want to know how i can fix this.

Assuming it isn't some silly setting like having your music turned off in the settings, I'd imagine that something went wrong during the conversion, so uninstalling & reconverting might be a quick easy fix.

Yeah i did that and its still not fixed, i checked if something in the settings menu was off but it was fine, if i can't fix that its fine if i record a speedrun and want to upload it should be with music off anyway. But that sucks...

UPDATE: I FIXED IT! it was something with a GTA mod that i installed a while ago and it had custom radios so that caused the problem it seems, i deleted it and it worked perfectly!