We totally support and encourage the concert-taping & tape-trading world; it’s fantastic to know that people want to share our tunes, so we say let ‘em share it!
There is a growing collection of audience recordings on the wonderfully useful and endlessly educational website, the Internet Archive. If you aren’t yet familiar with the Archive, do yourself a favor and browse around- you can thanks us later 
Check out Fruition’s Archive collection here.
And if you have recordings, or know folks who got ‘em, send them our way, or better yet head over to the Archive and post it for everyone. <3