I just use Audacity, but I don't do anything heavy on it. Mostly just recording streaming things and occasionally chopping up an audio file.
bro I'm fucking pro at using iTunes. I know this program's pretty complicated so here's a sample of me showing off my vast knowledge.
I have Sony Acid Music Studio, but I'm hesitant to PM because how good I am at using it, per se, depends on what you're going to need me to do. If you haven't found someone to help you already, though, feel free to ask me and I'll see what I can do @__@.
I can't tell you guys what it would be for except through PM, because I'm trying to keep it kinda on the down-lo. So far, only Spaztic Fantaztic has PMed me.