I make music exclusively with Renoise, a neo-tracker with all sorts of nifty features and an efficient, if intimidating, interface. It's what I'm used to, it's what I do. It's also cross-platform, which has made switching over to Linux a bit less painful in terms of Wine-hacking. I'm doing two albums at once because they're different styles, something I don't normally do but it felt right this time.
I don't make as much music as I'd like, because I spend so much of my spare time programming. I like Python, have a thing for Google Wave, and try to open-source as much of my code as possible for other people's benefit. My current projects are Orchard and Park.