Androo
Yeah, Androo.
On april 3, macrumors.com said this:
So then it should be announced soon, and it was already seeded.
As Apple gets nearer to the release of its online music service, one key factor in its "[g]rand opening" is the new version of iTunes that will support and control the downloading of music from said service. The good news is that a new build was seeded and it's approaching final candidate status -- possibly by mid-month.
An April release of iTunes (as well as iPhoto) had been rumored.
So then it should be announced soon, and it was already seeded.