The problem with web-browsers not generating sound has cropped up again, this time first under F-96 and by testing under Bookworm.
On my Fossapup64-9.5 I can configure my system to always generate sound. On F-96 I can't. My system offers 4 Graphic card choices.
The problem under F-96 is that Pulse-Audio defaults to C-Media USB-Audio Device then sometimes tries to use Lapsda plugins. This never generates sound. Under some web-browsers Pulse-Audio's playback can be configured to use 'builtin analog'; on other Not. I think pipe-wire does exactly the same. Under Fossapup64-95 I can use Multiple-Sound-Card-Wizard to specify that Card0:HDA Intel PHP, device 0:ALC269VB Analog be used.
MultipleSoundCardWizard (MSCW) can run under puppys such as F-96 and Bookworm. The screenshot was taken under Bookworm after deleting a config file in /etc. (I forget which via terminal showed an error and suggested deletion).
But after running MSCW's test (which generates sound) and selecting the appropriate Card, pipe-wire under Bookworm and pulse-audio under F-96 either ignores that selection or overwrites it. (I think the former).
I don't know how to co-ordinate MSCW with Pulse-Audio or Pipe-wire. While that may not be the only problem it may be a step forward.
Fossapup64 actually had two files, both in /usr/sbin. mscw2 is an update by 01micko which offers blue-tooth and I think has some other 'bells & whistles'. The attached tar.gz includes both. Although originally in /usr/bin I tested them from /root/my-applications/bin.
Unpack the tar.gz.