The deal allows Musicbank users to stream Sony music that is part of their personal collection over the Internet as long as they can prove they own the CDs.
Users can listen to their music collections on any Internet-enabled computer.
Musicbank has now cut deals with four of the five major labels. The unlaunched service is expected to be similar to the My. That company settled with four of the majors, but lost a copyright-infringement challenge brought by Universal. Musicbank's other major partners took equity stakes in the San Francisco-based company, something Sony isn't doing. Another arm of the Sony Group is developing Unsurface, which has a digital locker component.