I am unable to get Mumble to work on the RigPi. Here is the message that comes up when Mumble tries to connect:
[4:01 PM] Welcome to Mumble.
[4:01 PM] Opening chosen ALSA Input failed: No such device
[4:01 PM] Opening chosen ALSA Output failed: No such device
[4:01 PM] Connecting to server rigpi.local..
[4:01 PM] Connected.
On my client PC, Mumble does connect to the Mumble server on RigPi, but there is no audio throughput because the server can’t find ALSAMIXER.