Buzzfeed reporting this is him:
http://www.buzzfeed.com/jtes/wade-michael-page-is-the-suspected-wisconsin-templ
... seems to be part of the band “End Apathy” whose Myspace webpage is:
http://www.myspace.com/endapathyband/photos/48750181
More pics of the ‘band’ at the link directly above too.
That looks like a nazi flag in the background.