2012-05-17 WXPN / NON-COMMvention event / World Cafe Live
You can listen to Joseph's concert at NON-COMMvention (World Cafe Live, Philadelphia) via WXPN's Concert streams
-> Joseph Arthur at NON-COMMvention 2012
(~31.5 mins, XPN Media player link)
The link above should work directly - or click on the Concert tab and select "Joseph Arthur" from the RH column. If that doesn't work, try this link
for WXPN Listen Live. There may be a better link later and the show may be archived at NPR.
I haven't had a chance to listen to get the full set list yet ...
There is also a video on Youtube of Joseph performing "Travel As Equals"