Default Control where sound output goes?

So here's the situation. When my phone connects to my car's bluetooth, it routes all sounds to the car. That's the desired result when talking about Navigation or Music...but here's my problem.

If I change the source of my stereo or I turn it off, the phone is still trying to push audio to the car so I don't hear any notifications.

Is there an app (I am rooted on stock 4.4.2) that would allow me to force normal notifications to always come from the phone..or maybe a per-app setup where nothing went to BT audio unless I set it to do so?
-- iPad 3/Galaxy Tab 2 10.1/Galaxy Tab 2 7/Nexus 7/iPhone 5/Galaxy S3 x 2/DROID RAZR MAXX HD/Droid Maxx