I have installed two USBridge devices and updated to v8.1 with Allo GUI.
All services can be disabled except MPD. The Save Settings function never works after selecting to disable that service.
Also, there is an unusual grep reference in the Allo GUI MPD window:
Freq :Grep: /Etc/Mpd.conf: Permission Denied
HzBit :Grep: /Etc/Mpd.conf: Permission Denied