The Release Candidate announcement email I received a couple days ago mentioned some expansions to their Ubuntu One online file storage service, including improved multi-device syncing and music streaming, but now it seems they are taking one cool step more: You'll be able to stream your own music that's stored on Ubuntu One to your smartphone! An Andriod app is already released and an iPhone version is planned.
http://lifehacker.com/5652820/ubuntu-adding-mobile-streaming-to-its-ubuntu-one-cloud-service
