I wish that dsound was a bit more clear about licensing. users should be able to choose a license when uploading, so I know if the download is for personal use only, if it could be re-used commercially, or any restrictions the creator might want to use.... I am with @MSP-Waves radio is the reason i ask, and am curious about if a show host is allowed to use some of this music on the air.
http://creativecommons.org has good examples of some licenses including free culture licensing. I would like to see it tied with them, as they keep a database and it would help increase exposure for the artists, if you integrated with them.