If two people tried to play the same playlist item, before the playlist updated, it would delete instead of playing.
The same would also happen if the play button was double-clicked instead of single-clicked.
Also, the active item's play button functioned as a delete button.
Fully tested. Still removes the item (if it was added as temporary) when it finishes playing, or if the play button of a *different* item is clicked.
4809a3db00