A few free mp3 downloads, right click and 'save link as' if you have problems:

FiveFour (One 2004)
BronzeAge (One 2004)
Werewolves II live (No Sleep til Hebden Bridge 1999)
StoneAge live (No Sleep til Hebden Bridge 1999)
Lacus Somniorum (Deep Space 1998)
Auto (Deep Space 1998)
ValleyAir (Deep Space 1998)
King of Lyonesse (The Planets 1998)
MareImbrium (The Planets 1998)

You can also stream to winamp (m3u) here