I think we should leave the album rating feature in place, but add a "starred" feature.
If you've ever used Gmail, you may have noticed the starred feature. Next to every email, there is a star. It can mean whatever you want it to.
How about having a star next to every row in main.jsp. Whether it's an album, video, or a song, have a start next to it that toggles between on or off.
To some users, starred could mean favorites. To others, it could mean just the opposite.
To those who want to keep track of what TV episodes they have or haven't watched, put a star next to the ones you have watched.
In addition, next to "Play All" and "Play Random" could be "Add Starred".
Also, on the home screen, another tab would be added called "Starred" which would show the most recently starred items for the current user only.
I think this would be extremely useful, because stars would have different meanings for everyone. I would use stars with songs to indicate a liked song. But by videos, I would use it to "check off" which videos I've already watched.