[PROBLEM] Multiroom Audio - Receiver Volume Control Not Working

[dmueller]

You mean if you set "Master volume opt in" to Yes on the receiver then it works? Thats really strange since the same underlying command is sent to Receiver whether from Master volume or individual volume.

This actually sounds like a bug in trx-control.php. I'll investigate,

Yes!  If Master Volume Opt-in = YES on the receiver(s) and I change volume on the sender, everything works.  Just not individually.