Feature description:
You have 2 media provider (P1, P2)
Source filter P1
Play a queue with titles from P1
Pause
Source filter P2
Play a queue with titles from P2
Delete media provider P1
Now the queue from P1 still exist even if it can’t be played.
Not sure how to handle a queue with both P1 and P2 titles if P1 gets deleted.
Problem solved:
Queue clutter.
Brought benefits:
No confusion why no song plays if someone tries to start a queue with no longer existing titles.