mathojojo wrote: 
> Sounds devices on linux systems are managed by ALSA drivers. But when an
> application stream something to the ALSA device, this device is locked
> (and of course, can't be opened by another app). So, for example, if you
> are listening music on Youtube, you won't be able to hear sounds from a
> movie played by VLC, because the ALSA device will already be in use.
> 
> Pulseaudio is the solution to avoid thous rectrictions. It's a sound
> server. Pulseaudio open an ALSA device (set as default), and appear in
> ALSA as a virtual ALSA device.So all sounds, from each application is
> sent to pulseaudio, and Pulseaudio mixes all thous sounds to only one
> stream that can be sent to the default ALSA device.
> 
> So, in my case, When I set my squeezelite config file with "default -
> Playback/recording through the PulseAudio sound server ", in fact I'm
> selecting the virtual ALSA device "Pulseaudio".
> 
> I could select another ALSA device, but if I do so, the ALSA device
> selected will be locked by squeezelite and I won't be able to play
> anything else.
> 
> I hope I'm clear enough ;)
> 
> If you see an error in my demonstration, please tell me.
> 
> Thank you for your help

And thank you  for your explanation :)


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