Try looking for unreleased unsigned bootleg live and other similar keywords
There are some many copyright files on the network, that it's pretty hard to find legal stuff at the moment. When/if the developers fix the search, it should get easier.
Register and vote for it here (maybe even comment on the necessity of getting this fixed):
https://www.limewire.org/jira/browse/GUI-29
Just remember that what might be illegal where you live, doesn't necessarily have to be illegal elsewhere.
Good Luck and Happy Hunting :wink:
Sleepless