Yes I’ve downloaded the plugin from volumio web interface. My setup is this
RPI 4 whit 2 GB
DIYINHK USB audio
Volumio 3 last build
When enable plugin audio stutter always
The mpd_oled plugin in the Volumio plugin store uses an ALSA plugin (volumiofifo) that provides a copy of the audio on a FIFO. The balbuze plugin I was refering to provides a copy of the audio on the ALSA loopback device.
ahhh
I didn’t know
I’ll look at it, but don’t find it 
@Adrii can you link it please?!
The link for it might be 200 messages back in this thread, or it might be in another thread. Maybe someone made a note of it and can repost it.
It’s in this post. Look for v0.0.45 
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thank… but this is mpd_oled plugin, not loopback device
It installs mpd_oled, but you could install your own version of mpd_oled afterwards, and if you have new mpd_oled options then you could make sure the defaults for these options are the values you want.
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ok perfect… I’ll report soon
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Ok, looking at the ALSA configuation of this version of the plugin it is also using volumiofifo. However, it includes a comment saying it is using loopback. Maybe @balbuze can say if there is an ALSA loopback version of the plugin, and where it can be downloaded?
I was a bit slow, this isn’t the ALSA loopback version of the plugin.
Hello.
No, there is no Loopback version… The version I mod was tu use volumiofifo. Now @supercrab included it in the official version.
can you made a loopback only plugin?
I have installed my version, but it’s still work the plugin version
Nov 09 20:40:11 volumio mpd_oled[8862]: mpd_oled: error: -t: unknown option
I just disabled mpd_oled plugin on volumio settings
Do you mean you want the plugin to have a configurable cava input method? I’m not sure I know what you’re asking for?
I want use my mpd_oled version with ALSA Loopback
Actually the plugin don’t work properly on my system
Playback become stuttering as hell when enabled, also fifo was non perfect on Volumio 2 because spectrum and playback was not always in sync
On moode can use loopback and it’s always in sync
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The plugin doesn’t call mpd_oled with -t not sure what’s happening there? -t isn’t supported by mpd_oled either.
I have a branch of mpd_oled that did support -t -e -v but this is just for experimental purposes.
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I’m talking about my own version
look at post 517
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You’ll have to reinstall your version of mpd_oled and put it into /usr/local/bin/ for the plugin to be able to use it.
@davidevinavil it would be easier for me to provide installation instructions for mpd_oled on Volumio if there was a Volumio plugin that simply configured copies of the audio. Such a plugin would also be useful for people who want a simple way to run other audio visualisers on Volumio.
Regarding your issue, if you are interested in hacking one of the mpd_oled plugins to make the audio copy using ALSA loopback then you may find the following mpd_oled issue of interest (load the loopback module, incorporate the loopback parts of the example configurations into the plugin’s ALSA configuration, and set mpd_oled -c appropriately)
Spotify an Airplay · Issue #4 · antiprism/mpd_oled · GitHub
Adrian.