I also would LOVE to be able to play SHN tracks in my Empeg. Right now I either use Shnamp Winamp plugin (on my PC) or convert the SHNs with a wonderful tool called MKW Audio Compression Toolkit from >
http://www.etree.org/mkw.html to wavs then to MP3s. The conversion takes more of my time than setting up the downloads.
THe SHN is now the standard for Grateful Dead, Phish, Ratdog, and virtually all the traders sites.
The Futher.net peer-to peer thing only accepts submissions and searches with pre-approved bands (that generously allow audience recordings to be exchanged.) It is a legal Napster type exchange.
Thanks,
Mark