From "Who needs to pirate software with a list like this?"

Audio Creation

Gungirl Sequencer - http://ggseq.sourceforge.net/pmwiki.php/Main/HomePage
HammerHead - http://www.threechords.com/hammerhead/introduction.shtml
Jesusonic - http://www.jesusonic.com/soft.php
KRISTAL Audio Engine - http://www.kreatives.org/kristal/index.php
orDrumbox - http://ordrumbox.sourceforge.net/

Audio Players:

Billy - http://www.sheepfriends.com/?page=billy
CoolPlayer - http://coolplayer.sourceforge.net/
DeejaySystem MK1 - http://www.deejaysystem.com/prod_mk1.asp
DeliPlayer. http://www.deliplayer.com/
Foobar 2000 - http://www.foobar2000.org/
iTunes - http://www.apple.com/itunes/
Jet Audio Basic - http://www.jetaudio.com/
Mixere - http://mixere.sourceforge.net/
Mixxx - http://mixxx.sourceforge.net/
monoRAVEik - http://www.mono211.com/monoraveik/mr1200.html
MoreAmp - http://sourceforge.net/projects/moreamp/
Musik - http://musik.berlios.de/
musikCube - http://www.musikcube.com/
QCD Player - http://www.quinnware.com/
Sonique - http://sonique.lycos.com/
Winamp - http://www.winamp.com/
XMPlay - http://www.un4seen.com/xmplay.html
Zinf - http://www.zinf.org/

Audio Tools:

Audacity - http://audacity.sourceforge.net/
AudioShell - http://www.softpointer.com/AudioShell.htm
BeSweet - http://dspguru.doom9.net/
dBpowerAMP Music Converter - http://www.dbpoweramp.com/dmc.htm
EAC - http://www.exactaudiocopy.de/
Encounter 2003 - http://www.waschbusch.com/
GermaniXEncoder - http://www.germanixsoft.de/
K-MP3 - http://www.katarncorp.com/
KraMixer - http://www.kramware.com/
MP3 Book Helper - http://mp3bookhelper.sourceforge.net/
MP3 Tag - http://www.mp3tag.de/
Mp3 Tag Tools - http://massid3lib.sourceforge.net/
mp3Trim - http://www.logiccell.com/~mp3trim/
MusicBrainz - http://musicbrainz.org/
Rarewares - http://rarewares.hydrogenaudio.org/
SoundEngine Free - http://www.cycleof5th.com/en/index.htm
The GodFather - http://users.otenet.gr/~jtcliper/tgf/
TigoTago - http://www.tigotago.com/