You may have seen the link for this floating around.
SXSW has put together a BitTorrent file containing over 750 songs from bands playing the event.
The file is 2.6GB and I have been downloading it for two days. I am now at 95.7% complete, so we are getting very close.
Looks like I will have alot of new music to listen in the morning. As I find stuff I like, I’ll post something.