tulamide, yeah I totally agree, Wavosaur is substantially easier to work with than Audacity. Audacity is great, its interface is just ugly. Wavosaur works just like the commercial Sound Forge, which is far easier to use than other audio editors.
edisone, Psycle's awesome, I've done a number of past projects in it as well. Psycle derived most of it's concepts from Jeskola Buzz, which I mentioned earlier. I now am back on Jeskola Buzz because the latest version is simply incredible.
However, there's also Buze, which can use plugins from both Buzz and Psycle. I just happen to prefer the current Buzz interface over both of those.
Just to mention too, Buzz actually has 2 of the very best Roland TB-303 emulators out there. People usually pay for the types of sounds this free software is capable of. Here's a demo video I made, for anyone interested.