Hey guys, this is my situation...

I just got my computer reformated at the local computer store and now when I try to play music in the background while playing games (ie. Warcraft, GTA:SA) like I used to, nothing comes out of the speakers excecpt the game's audio. The song is playing with no audio. As soon as I exit the game the music starts playing. However, when I put my headphones on everything works fine, the audio in the background plays perfectly while playing the game. If you know what I could do to fix this, I would appreciate it greatly.