[Obsidian Dragon]

Originally Posted by RackAddict

Or is pro tools not liking such resources used at the same time?

You are correct. Protools does not like to share. It wants exclusive control and access to the audio interface. So your system sounds, mp3 playback, YouTube videos, browser audio, etc. should not use the audio interface's outputs. You can set those to some other audio device. Dedicate the audio interface that you use with Protools to only work with Protools. This is legacy design back in the day when audio drivers were single client. Even now, where audio drivers are multi client, Protools is not always willing to play with others. Some folks have it working, but it really depends on the audio driver and Protools working together nicely.