Surround Sound does not work for me with default asoundrc #108

Hi, thanks for the great work!
I have an USB Surround dongle that I use in LibreELEC and it works great in Kodi. But in moonlight-qt only the front left and right speakers make any sound if I select Surround 5.1 in the settings. It also sometimes crashes if I select Surround 5.1 when I try to start the stream.

I am running LibreELEC 12.2.1 on my RaspberryPi and I do have the audio device selected in Kodi. So I don't use the default device.

This is the asoundrc it generates at launch:

pcm.!default "sysdefault:CARD=ICUSBAUDIO7D"

# Re-mapping 5.1 channels for Moonlight-qt
pcm.!surround51 {
  type route
  slave.pcm "sysdefault:CARD=ICUSBAUDIO7D"
  ttable {
    0.0= 1
    1.1= 1
    2.4= 1
    3.5= 1
    4.3= 1
    5.2= 1
  }
}

# Re-mapping 7.1 channels for Moonlight-qt
pcm.!surround71 {
  type route
  slave.pcm "sysdefault:CARD=ICUSBAUDIO7D"
  ttable {
    0.0= 1
    1.1= 1
    2.4= 1
    3.5= 1
    4.3= 1
    5.2= 1
    6.6= 1
    7.7= 1
  }

I beleave the issue is that it tries to use sysdefault here. I tested it seperately and can confirm that it reports as two channels.

As a workaround I use the asoundrc from @DeViLRuNNeR-dev moonlight-stream/moonlight-qt#1041 (comment) and that works great.