OK, I tried testing it out tonight, and as far as I can tell, it is going through the ir_translate. However, I'm seeing an issue where as soon as the extmute is invoked while a user app is running, the app freezes up, as does the entire player, which stops responding to network activity (pings aren't answered, telnetd is frozen, etc.) The only way to rescue it is to pull it out of the sled.

To rule out anything screwy my app is doing, I tried it with empacman, and I got the same result. As soon as extmute is triggered, the screen freezes and the player stops responding to button input. This happens even with a conventional SaveAux/RestoreSrc definition for the extmute settings (i.e. not sending a sequence via the ir_translate path.)

Any idea what might be happening here?