Yes, thank you again, Jonas!

So it was worth it to by my high quality DAC and run it with Linux
(Musical Fidelity V90)

https://archive.org/details/smart-playlists-amarok

Hello, I'm working with intelligent playlists. The problem is, that if let's say I want to create a calm/relaxed mix for the evening,
then I have to decide, if it is a AND or a OR playlist. But that is a problem!

So for example for my playlist:

Genre: Contains "calm" OR
Genre: Is "triphop" OR
Genre is "jazz"

So the problem then is, that I get also music that only has a rating of 3/5 stars. But I ONLY want the songs that have a rating 4+ and also I don't want songs by leonard cohen. So what kind of playlist I would like to see is this:

Genre: Contains "calm" OR
Genre: Is "triphop" OR
Genre is "jazz"

AND
Artist: is not "Leonard Cohen" AND
Rating: Is higher than 4/5"

What do you think?

Found a solution!

https://debianforum.de/forum/viewtopic.php?p=1358882#p1358665

1. Install all Pipewire packages

2. Create this file:
   ~/.config/pipewire/pipewire.conf.d/swapped_channels.conf

3. and paste this:

context.modules = [
	{ name = libpipewire-module-loopback
		args = {
			audio.position = [ FL FR ]
			capture.props = {
				media.class = Audio/Sink
				node.name = swapped_channels
				node.description = "Switched Channels"
			}
			playback.props = {
				node.name = swapped_channels
				node.description = "my-sink"
				audio.position = [ FR FL ]
				node.target = "Switched Channels"
			}
		}
	}
]

4. Then Choose pulseaudio in strawberry in and Choose this device: Switched Channels

@jonas Hm, but why doesn't strawberry use the custom audio device when I choose "custom" and then paste swapped_dac into the text field? Why does strawberry play back anything at all, if I do that. That seems to be strange. But as I said, when I do the custom thing, the playback channels are not switched.

Ok now it seems to be working with pipewire and qpwgraph for changing channels. Needs to activate "auto pin" though and put qpwgraph into the autostart programs. Also needs to set Strawberry to Pulse and then choose the audio card.

But this is buggy because qpwgraph keeps forgetting settings. Hm, not a very good solution.

Hm Pipewire doesn't seem to be supported in Strawberry, correct?

Hi Jonas, any new ideas about that? In my debian forum someone wrote that pipewire passes music in original quality on to ALSA. I might try that instead of pulseaudio....

Hi Jonas, thanks for the reply.

1. I'm using alsa, becaus I want the best possible quality
2. aplay -L shows the virtual device:

"swapped_dac
Musical Fidelity V90 (L/R vertauscht)"

aplay -l doesn't seem to show it.
I already tried to put swapped_dac int the "custom" field in Straberry settings unser PCM and HW. It played back, but the channels were not switched.

Hi, I have a speaker setting in my room that makes it necessary to swap left-and-right stereo channels in Alsa für Strawberry.

So what I did was to write this into the .asoundrc in my home directory:

pcm.swapped_dac {
    type			route
    hint.description	"Musical Fidelity V90 (L/R vertauscht)"
    slave.pcm		"hw:M2496,0"
    ttable.0.0		0
    ttable.1.1		0
    ttable.0.1		1
    ttable.1.0		1
}

But Strawberry doesn't find my virtual soundcard named swapped_dac. Also not by the Name "Musical Fidelity V90 (L/R vertauscht)".

Any chance I can use Strawberry with that virtual sound card? Both the deadbeef-player as well as audacity are able to play back with hat device...

Hi, now I tried to activate Pulse and then choose "Output to a sound card via ALSA" in Strawberry and under "Device": "Automatically select" instead of the name of my sound card.

Now audio seems to work simultaniously in firefox and strawberry.

But pulse is active. Is that a problem for sound quality despite the fact that I have chosen "Output.... ALSA" in Strawberry?

https://archive.org/details/smart-playlists-amarok

Hm, no other answers. Am I the only one intensively using that program functionality? I can't imagine, that this lack of feature doesn't bother anyone else...(?)