hi ppl i am playing at the moment liberty city and i cant get radio stations working, everytime i select station you can hear it tune in but then nothing. is it just a bad file that i have got. i am using gen-d cfw
also, if the file is not ripped, than it might not play well if you have it in .cso form instead of .iso.
Buy the game (it's cheap now)
Download a full copy, which would be about 1.2gigs without being in .rar form.
Run CFE under your CFW which will allow you to play any music from your memory card during gameplay, however with music and the iso running from ur psp ur gameplay will slow down