I'm using a mac, running on OS X Lion, with an M-Audio Profire 610 sound card and M-Audio Studiophile AV 40 speakers.
All works fine, but the problem is when I have sound which is meant to be in surround, obviously because I don't have a surround speakers, parts which should be in rear speakers don't play, or you just get a small amount of bleed in the front ones. Of course this is annoying when listening to certain music, and absolutely infuriating when trying to watch a film!
Have tried and failed to find anything on the mac which should help me to turn the settings to stereo rather than surround etc...
Hope someone can help, and many thanks in advance!