[winswitch] No audio on upgrade to 4.3.2

[xpra at zellners.com]

After upgrading my client during my recent OS updates, got XPRA 4.3.2  
for the client.

Ran that to see if any change in re the "lethargic" startup in  
previous mention....

But noticed immediately, NO AUDIO.

Do not get the "audible beep" on startup.

Connection status shows Audio: "ready"

Client will show "audio connection using opus codec"

Tried a toggle via xpra|speaker| off/on.. no joy. Still no audio from  
the server.

Ubuntu 20.04..on server and client...

Tried on an older client 4.2.? something.... on the connections status  
it shows "ready" and then it will go to "disabled" toggle off/on/off  
etc.. it will stick for a few seconds, "ready" and then "disabled", no  
audio here either.

Any anything else to investigate?

Server startup:

Start up the server:
xpra start --env=XPRA_VAAPI=0 :100 --start=/home/server/dir/dir2/bin/program

100/socket
2022-02-16 00:52:20,815  please wait as we allow the socket probing to timeout
2022-02-16 00:52:26,827 created unix domain socket  
'/run/user/1000/xpra/rec9140-SDRBox-100'
2022-02-16 00:52:26,827 cannot create group socket '/run/xpra/rex-SDRBox-100'
2022-02-16 00:52:26,827  [Errno 13] Permission denied
2022-02-16 00:52:26,829 created unix domain socket  
'/home/rex0/.xpra/rx40-SDRBox-100'
2022-02-16 00:52:26,830 created unix domain socket  
'/run/user/1000/xpra/100/socket'
2022-02-16 00:52:26,830 xvfb pid=1421
2022-02-16 00:52:27,021 D-Bus notification forwarding is available
2022-02-16 00:52:27,059 pulseaudio server started with pid 2795
2022-02-16 00:52:27,061  private server socket path:
2022-02-16 00:52:27,061  '/run/user/1000/xpra/100/pulse/pulse/native'

(Xpra:2779): Gtk-CRITICAL **: 00:52:27.197: gtk_widget_realize:  
assertion 'widget->priv->anchored || GTK_IS_INVISIBLE (widget)' failed
2022-02-16 00:52:27,524 waiting for initialization thread to complete
2022-02-16 00:52:27,571 xpra is ready.
2022-02-16 00:52:27,581 watching for applications menu changes in:
2022-02-16 00:52:27,581  '/usr/share/applications'
2022-02-16 00:52:27,595 Warning: webcam forwarding is disabled
2022-02-16 00:52:27,596  the virtual video directory  
'/sys/devices/virtual/video4linux' was not found
2022-02-16 00:52:27,596  make sure that the 'v4l2loopback' kernel  
module is installed and loaded
2022-02-16 00:52:27,597  or use the 'webcam=no' option
2022-02-16 00:52:27,597 found 0 virtual video devices for webcam forwarding
2022-02-16 00:52:27,699 GStreamer version 1.16.2 for Python 3.8.10 64-bit
2022-02-16 00:52:28,869 xpra X11 seamless version 4.3.2-r0 64-bit
2022-02-16 00:52:28,870  uid=1000 (rec9140), gid=1000 (rx140)
2022-02-16 00:52:28,871  running with pid 2779 on Linux Ubuntu 20.04 focal
2022-02-16 00:52:28,878  connected to X11 display :100 with 24 bit colors
2022-02-16 00:52:37,532 Warning: initialization thread is still active
2022-02-16 00:52:37,565 started command 'ibus-daemon --xim --verbose  
--replace --panel=disable --desktop=xpra --daemonize' with pid 2852
2022-02-16 00:52:39,011 loaded 56 start menu entries from 10 sub-menus  
in 11.4 seconds
2022-02-16 00:52:39,141 printer forwarding enabled using postscript and pdf
2022-02-16 00:52:39,155 started command '/home/