scook
IIRC, in SONAR 8.5 there is a button on the Audio Options General Tab to run the Wave Profiler.
I think there is, but only if you are using Windows drivers, not ASIO. If your using ASIO, that button is not available.
If your using Windows drivers, you can go to Preferences/Audio/Driver Settings and under Playback Timing Master you could select None, click apply, then go back to Playback Timing Master and select your audio device and that would reset your settings, but it won't rescan you audio hardware if that's already been done.
I have to do this to get CbB to see my headphones sometimes.
HTH