Okay, so this has been a while in coming, but you can now create playlists. I imagine this'll come in most handy for audio artists to start with, but you can put any submission in there and users can pick and choose what they want from your list. If there are audio entries in there, the users can cycle through them. You can shuffle the lists around however you like.
To start a list, just find any entry you like, click the playlist icon, enter a title. Then go find other entries and either add them to that list, or create another to add it to.
You can check one I put together (currently at the top of) my userpage.
Yes; there will be bugs (which you can list), we do plan on adding a lot more functionality, etcetera, etcetera. But consider that an early Christmas gift!