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

MachrieMoor (Organic Dubs 2003)
Scarab (Organic Dubs 2003)
RebelSkank (Live n Dubbed 1997)
StrangeBeliefs (HeadDubSubSonic 1997)
SensilessSlumber (Live n Dubbed 1997)
HarderTheyCome (HeadDubSubSonic 1998)
Harder Dub (HeadDubSubSonic 1998)

You can also stream to winamp (m3u) here