Remove Hidden Songs
Using Jamroom
Sorry for the delay responding here.
There is no inbuilt way of doing this so something custom would be needed. The main issue with this deciding which songs to keep (most recent, most played, whatever). You'd then need to enter how many to keep, though this could be based on their quota settings. The same would apply to any othe items that are limited by quota, blogs say - keep most recent, keep those with most comments?
The upshot is a module that could end up being fairly complex.
hth