I have tried sony sound forge 4.0 and i couldn’t get used to the interface. Audacity is something that I will have to check into.
As far as mixing goes, i was talking about mixing music, like a dj does in the club? I found one program that is really good, called Traktor 3, by NI Studios. It has a 30 min trial mode, but you can’t save anything in it. and it costs $250 for the program license. Some of the freeware ones on the market also contain spyware, or are not very good at what they are supposed to do.