Getting Pulseaudio and alsa to share one sound card

[Mark Gaiser]

Have you tried changing your device in ledfx to pulse?
https://ledfx.readthedocs.io/en/latest/directing_audio.html

Again no idea if this works, I don't know nor use ledfx :) Just trying to
help out.

On Tue, May 7, 2024 at 6:14 PM Richard Reina <gatorreina at gmail.com> wrote:

> Hi Mark,
>
> Thank you for the reply.  paplay also works but there's no change. It's
> not the playing of the song that locks up the device and causes Moode audio
> not to be able to use it, it's the starting of ledfx. Once I do systemctl
> start ledfx the moode audio player can no longer use the output device
> regardless if I play a sound file with aplay, paplay or don't play a sound
> file at all. Moode audio can't use the device until I do systemctl stop
> ledfx.
>
> El mar, 7 may 2024 a las 10:48, Mark Gaiser (<markg85 at gmail.com>)
> escribió:
>
>> Can you use paplay instead?
>> That is the pulseaudio aplay drop-in replacement.
>> I'm guessing you won't have "device or resource busy" errors when using
>> paplay.
>>
>> I did not test this! But do let us know if it works for you :)
>>
>> On Tue, May 7, 2024 at 3:24 PM Richard Reina <gatorreina at gmail.com>
>> wrote:
>>
>>> I have a Raspberry Pi 3b with a Hifiberry Amp4/DAC hat runs Moode Audio
>>> OS.
>>>
>>> If I pick Pulse as they audio device in LedFx and play a sound file
>>> with aplay sound_file.wav my leds react to the music.
>>>
>>> The problem is that after aplay has finished playing the sound file if
>>> I then go try to use Moode audio player Moode audio won't play music and
>>> gives me the following error:
>>>
>>> MPD error Failed to open "ALSA Default" (alsa); Failed to open ALSA
>>> device "_audioout": Device or resource busy
>>>
>>> This persists until I stop Ledfx. Is there a way I can switch back and
>>> forth between aplay and Moode Audio player without having to stop and start
>>> Ledfx? I am not looking to get LedFx working with Moode I only want
>>> reactive lights when I play a song with aplay.
>>>
>>> $ aplay -l
>>>
>>> **** List of PLAYBACK Hardware Devices ****
>>>
>>> card 0: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry
>>> DAC+ HiFi pcm512x-hifi-0 [HiFiBerry DAC+ HiFi pcm512x-hifi-0]
>>>
>>> Subdevices: 0/1
>>>
>>> Subdevice #0: subdevice #0
>>>
>>> $ amixer
>>> Simple mixer control 'Master',0
>>>   Capabilities: pvolume pswitch pswitch-joined
>>>   Playback channels: Front Left - Front Right
>>>   Limits: Playback 0 - 65536
>>>   Mono:
>>>   Front Left: Playback 65536 [100%] [on]
>>>   Front Right: Playback 65536 [100%] [on]
>>> Simple mixer control 'Capture',0
>>>   Capabilities: cvolume cswitch cswitch-joined
>>>   Capture channels: Front Left - Front Right
>>>   Limits: Capture 0 - 65536
>>>   Front Left: Capture 65536 [100%] [on]
>>>   Front Right: Capture 65536 [100%] [on]
>>>
>>
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