MySpace Music, a joint venture between the News Corp. social network and music labels Universal, Sony and Warner,finally launches next week, says Fortune, though it still won't have a CEO. MySpace users will be able to listen to and organize playlists full of songs from all three music labels for free. (EMI is the lone holdout, which means no coldplay.) Playlists will include affiliate links to Amazon.com's MP3 store. MySpace CEO Chris DeWolfe says ad revenues and song kickbacks are going to save the music industry, replacing lost CD sales.Imeem CEO Dalton Caldwell, whose company already offers a similar product,