DontCrack.com is another interesting place to look for music making software. It lists quite the collection of free music software along with regular special deals for commercial software.
I’ve also previously mentioned some other good resources for free music making software:
FreeMusicSoftware.org – A blog by Crispin with the tag line: A collection of the best Free Audio and Music floating around in Cyberspace.
GERSIC.COM – the giant free audio plugin database
KVRaudio.com – The premier news site for everything related to audio plugins. Fabulous search engine for plugins and host software, which makes it easy to find only free plugins or also commercial one’s.