The Submit button has had "AcoustIDs" made explicit, which is good, since it was never really obvious what it was going to submit.
But perhaps it then also makes sense to also make it explicit for the Scan button, since that is what generates the IDs to submit. Could be on the button text, or on the tooltip (the status text already mentions them).
Alternatively (or additionally), the tooltip and/or statusbar text for a disabled Submit button could include "(as generated by Scan)".
Regardless of any of the above, it would be good to make the text more consistent - now scan mentions "AcoustID audio fingerprints" in the status bar, but submit uses "acoustic fingerprints".