Trying to figure out if the reason sound isnt working is due to missing packages I found a script https://stackoverflow.com/questions/26592963/how-to-compare-installed-linux-packages-between-two-machines
So I made a copy of the packages installed on dietpi 9.11.2 and on the latest armbian. Ran the perl script and got this report.
pkg_compare_raw.txt (27.7 KB)
I will look through it for alsa/pipewire sound packages and see if installing any of those helps and update this thread if I have any luck 