When I'm on my Mac I use iTunes, and it is great. But one I like that most people probably don't use is one called Creative MediaSource. It is software that came with my Creative MuVo TX FM MP3 player. It has a lot of good features for recording, and can record the stereo output from your computer, so if you need to convert a file but it doesnt seem to be working, just play it in a compatible media player while recording stereo out with MediaSource. In my opinion, it is a great program that most people don't get to use. If you want to try it out, you would have to buy a Creative MP3 player, although they are a good brand of mp3 players...