As noted at the end of the post...
If for some reason you've tried to use more than one audio player on the Pi simultaneously and you don't know which program has the lock on the alsa device it might be easier to just reboot the Pi, the Roon Core will have nothing to do with it.
Quote:Do note that Roon Bridge will lock the audio device whilst playing so other audio software that comes with Moode like mpd, shairport-sync, librespot etc. will not be able to play whilst Roon is playing to the Pi and vice-versa.
Simply stop whatever is playing from Roon to use the rest and vice-versa.
If for some reason you've tried to use more than one audio player on the Pi simultaneously and you don't know which program has the lock on the alsa device it might be easier to just reboot the Pi, the Roon Core will have nothing to do with it.
