Dear Maintainer,
I'm having this same issue on Debian Unstable (except with Rhythmbox being
the linked to program).
* What led up to the situation?
When I mount a usb thumb drive and view it in nautilus
* What exactly did you do (or not do) that was effective (or
ineffective)?
I tried several different thumb drives, even ones that were cleanly
formatted and with no files on them.
* What was the outcome of this action?
It still specified that the usb drive "Contains music" and offered to
launch Rhythmbox.
* What outcome did you expect instead?
For it to not say "Contains music" when the device doesn't contain music.
