Hallelujah, I have a fresh #UbuntuStudio now on my Dell Xeon workstation.
First thing I need to do is open a terminal window and run #alsamixer.
There is no special GUI for my very old #RME #Digi9652 PCI sound card but it can be set to Clock Master in alsamixer – which is what I need. As usual on Linux, this old card works out of the box. (There are some younger RME Digi cards with ”Hammerfall“ in the name that have special tools for Linux.)
Next important step is to Ubuntu Studio Audio Configuration and set sample rate and buffer size. The only configuration dialog for #Pipewire that is offered.
Next step is to click the speaker icon and set all your professional audio interfaces to "Pro Audio", in my case the Yamaha 01v96i via USB and the RME Digi.
I might unplug the Yamaha though, actually I don't use it via USB.
Pipewire also shows my #HDMI audio outputs… now that's more relevant on the laptop.
Testing: Audio playback from Firefox/YouTube works, of course.