hey folks,
Car radios being popular things and all, here is an old Ofpec script updated for Armed Assault. To use in your own mission, you can keep all the tracks or insert your own songs, for example in Punishment Battalion I inserted "Kashmir" next to "Atrack1" etc. The config name of your song will be displayed in the hint box too as you are testing songs during the mission.
Credit for this script goes to:
http://www.ofpec.com/FAQ/faq_sound.phpand THobson's "PlayRoadMusic.sqs" (which has more features related to volume for specific vehicle type etc, but for the purposes of this update I kept it simple)