Sorry Mike, I lost track of this one. There doesn't seem to be an obvious explanation for your problems.

I've spent a huge amount of time over the past 2 weeks completely rewriting the way in which tRio sends audio data to the receivers. It's starting to look pretty stable now, so why don't we give it a try on your Linux set up. If you're keen I'll send you the files - just PM me with your email address.

Cheers
Paul