Philadelphia’s WXPN opened early bird registration for the 9th annual NON-COMMvention, a May 28-30 conference featuring music showcases and sessions on the business of programming, funding and marketing Triple A music stations. ‘XPN is hosting the conference at its studios and the adjacent World Cafe Live concert venue on the campus the University of Pennsylvania. There’s no increase in last year’s bargain-rate registration fees. Hotel information and conference schedule are to be announced soon.