that was dumb XD
but if you want to listen your own music while playing CA, you just have to open your windows media player... and play the music o.o
or insert your own songs in nexon folder replacing their music with the same name and it will play your music instead of theirs also most people don't like having alot of things open, i don't atleast, i mean not everybody got a good comp, me personally have 4gb of ram, and i still have running other programs along side of combat arms besides for opera and the basic hacks.
iTunes encodes all your songs so that they will only play through iTunes player and nothing else. If you want those songs to play through combat arms you will need to decode them first. BGM.rar
Make sure you back the files up next time (or just rename them)