I believe Hijack was installed. Correct?
Hijack somehow missed/got confused about the "button-up" command from the volume knob. Or perhaps another button on the remote. This is something that should be reported to Mark as a Hijack bug. Here is how to reproduce it with the volume knob, not sure how to do it with other buttons:
- Press and hold the volume-knob-button on the front panel. Do not release it.
- Press and release the Menu button on the Rio Remote Control.
- Now release the volume-knob-button on the front panel.
Player now switches sources constantly with no input. Can be cleared simply by pressing and releasing the volume-knob-button on the front panel.