This is a solid idea. It would be nice if you could provide a ribbon-style Steemit app web plug-in that plays random songs or links to a Steemit Radio Station.
If we could provide ways to self-monetize through some such ribbon for Steemvertisers then it could also pay that way. Not sure if advertising is the way to go on it, though.
Thanks for the message. It will definitely be downloads first of all... perhaps streaming (radio style) in the future.