Any help would be appreciated!
 
I currently have a line 6 KB37 audio interface and it works great except some audio problems. When I first start up x2 the music I have made plays through my KB37 out the speakers with no problem. Once I minize that screen or x out and go back into it later, the sound usually doesnt work anymore and I have to restart the computer to get it to work again. If I play anything from outside of x2, like and itunes song it works fine. It is only the audio within sonar that I cant get a sound out of. It is really annoying having to restart the computer everytime I minimize my x2 file. I don't understand how it works initially but not after that. AND once and a great while after I minimize it if I go into edit then preferences and just click apply at the bottom the sound will work again, but usually that doesnt work.
 
-Michael

It sounds like X2 isn't letting go of the driver...so it hangs in X2 once exited, and
consequently, no audio when re-opening the program.

Have you tried checking the "Share driver with other programs" option
under "Preferences" ???  Just a thought.

That might help...and make sure you have the most recent driver as well....