I'd like to share a tool I found this week, it's free for no commercial use and I found it great. It's called Krystal Audio Engine, it's a 16 tracks DAW, with 2 effect per track + 3 global effect (VST plugins). It is very simple to use and you don't need a fast cpu.
Here's the link : http://www.kreatives.org/kristal/
PS: Usually I don't talk about software but I searched for a long time a mixing program running on windows, so may be I can help other people like me. Now I can try to mix my triphop song (ds10+voice)