Okay, this might get a little confusing.
Earlier in the year, the PlayStation Network became part of Sony Network Entertainment, and that included Qriocity and music on-demand services. Now, we've got another change.
As of today, all aforementioned categories are part of the Sony Entertainment Network. Significantly, due to this rebranding, Sony will discontinue the Qriocity name; the service will now be called Music Unlimited. The Video on Demand part of Qriocity has been simplified to Video Unlimited. Unsurprisingly, such services will continue to be found on the PlayStation 3.
By the way, all the SEN services (PSN, Music/Video Unlimited) use the same account information and the same virtual wallet. Just remember that this doesn't include other services like Hulu Plus and MLB.tv.