@bumBumBUM: I have had great success mixing the KX Studio repos and Ubuntu Studio. What I normally do is start with a clean vanilla install of Ubuntu, then I install Synaptic (I find it a lot easier to use than the Ubuntu Software Center), then add the KX Studio repos. Next I install all of the KX Studio packages I want like jackd, cadence, etc. Finally I install all of the the Ubuntu Studio packages.

This gives me the best of all three worlds. The Unity interface I like, the KX versions of common audio apps, the KX specialty apps and the Ubuntu Studio suite of everything else...

Cheers!