Invalid audio device #2 - Raspberry Pi OS (32-bit) Lite fresh install

Hello

Have installed SamplerBox by following the procedure.

´´´
pi@raspberrypi:~/SamplerBox $ python samplerbox.py
Invalid audio device #2
´´´

Tried re-installing Raspberry Pi OS (32-bit) Lite on the memory card to remove all other faults.

How do I proceed to fix this issue?

´´´
pi@raspberrypi:~/SamplerBox $ aconnect -o
client 14: 'Midi Through' [type=kernel]
0 'Midi Through Port-0'
client 20: 'MK-249 USB MIDI keyboard' [type=kernel,card=1]
0 'MK-249 USB MIDI keyboard MIDI 1'

pi@raspberrypi:~/SamplerBox $ aplay -l output
List of PLAYBACK Hardware Devices
card 0: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7

´´´

After modifying samplerbox.py some:

#########################################
# OPEN AUDIO DEVICE
#
#########################################

sd = None
outputdevices = [AUDIO_DEVICE_ID]
[outputdevices.append(x) for x in range(0, 10) if x not in outputdevices]
for AUDIO_DEVICE_ID in outputdevices:
    if sd:
        break
    try:
        sd = sounddevice.OutputStream(device=AUDIO_DEVICE_ID, blocksize=512, samplerate=44100, channels=2, dtype='int16', callback=AudioCallback)
        sd.start()
        print 'Opened audio device #%i' % AUDIO_DEVICE_ID
    except Exception as e:
        print 'Error when opening audio device #%i - %s - %s' % (AUDIO_DEVICE_ID, type(e).__name__, str(e))
        sd = None
#    print 'Invalid audio device #%i' % AUDIO_DEVICE_ID
if not sd:
     print 'Unable to open audio device'
     exit(1)

By removing the sample rate specification, i.e.:

            sd = sounddevice.OutputStream(device=AUDIO_DEVICE_ID, blocksize=512, channels=2, dtype='int16', callback=AudioCallback)

I end up with this:

pi@raspberrypi:~/SamplerBox $ sudo python samplerbox.py
Error when opening audio device #2 - PortAudioError - Error querying device 2
Opened audio device #0
Opened MIDI: MK-249 USB MIDI keyboard 20:0
Preset loading: 0 (0 Saw)
Preset loaded: 0

However there is no sound when playing at the MIDI keyboard.

Audio output has been verified with OMXPlayer

wget rpf.io/lamp3 -O example.mp3 --no-check-certificate
pi@raspberrypi:~ $ omxplayer -o local example.mp3
Error: Unable to open font
Audio codec mp3float channels 1 samplerate 11025 bitspersample 16
Subtitle count: 0, state: off, index: 1, delay: 0
have a nice day ;)

Please advice.

Hello I have been having the same problem, but have a workaround involving an external audio device.

Am installing manually using a pi 4, and was getting the Invalid audio device 2 issue.

I couldnt totally figure out how the audio devices were getting numbered, but running alsamixer, and then F6: Select sound card, I could see that no 2, appeared to be bcm2835 Headphones, and I have headphones plugged into my audio jack and otherwise working.

Well, I wasnt making any headway, so on a whim I plugged in my USB Focusrite Scarlet Studio, which is an external audio device that I have for running an external mic, and guitar into computer. This showed up in alsamixer as a new entry (no 3).

Then setting AUDIO_DEVICE_ID = 3 in the python script, and Bingo, it worked.
I dont really want to use the external device however, so still looking for better solution

Hello,
I'm having the same issue, but don't have any external sound card, is there another way to use the internal sound card of the pi?
I've tried the audio devices from 0 to 3 and nothing-