Comment 1 for bug 1440675

I don't think Mixxx should be in the business of opening third-party programs. It's a maintenance nightmare for the multiverse of linux distros and may not even be possible on sandboxed Mac OSX. Opening alsamixer in a terminal window on linux will not be a good user experience.

Where are you seeing significant demand for accessing the hardware preferences? You say it's an "insurmountable hurdle" but that's not really justified. Also, some sound cards require more special care -- the audio4dj requires a custom .asoundrc, and the Serato boxes require a card-specific preference pane on OSX. So it won't even solve the problem of sound setup being difficult anyway.