Well, if the competitor you're talking about is Grooveshark: AFAIK, their adobe air client is for the most part a legacy application. Grooveshark used to be all

Well, if the competitor you're talking about is Grooveshark: AFAIK, their adobe air client is for the most part a legacy application. Grooveshark used to be all flash in the past, so they made the desktop app with AIR. They seem to invest all their effort into the (very good) HTML(5) client and into mobile apps now.