@robh,

I have had one instance where the sender's .mp3 had enough timing variation so as to mess up the import into my audio software and couldn't hold to an internal click reliably. That's why I've moved to monkey's audio for 2-track sends to me.

However, I have contributed globally to others' work using 320 kbps .mp3 files as sources, for the most part without issue.

-Scott