Relevant Magazine used to have this online music video channel with a fantastic selection of music transcending all genres. For some reason, they took it down; but now I am very happy to proclaim that it is back! www.relevant.tv Enjoy.
Incidentally, I suspect it's a video channel because there's no rule (as far as I know) forcing online video players to pay royalties, as there is for online radio. That rule is killing my other favorite source of music online Pandora.