I've been using TDE for several years, on an old Chromebook, and on a Raspberry Pi. Haven't tried the latest version on those machines, but wanted to try it in the VM. In general, I really like TDE (especially the "Keramik" theme and the sounds--reminds me of my early Linux days with Mandrake 9.1). I would love to continue using it on at least an older machine, as long as possible. The low memory usage, snappy response, and beautiful design make it a true gem.
+1!
Btw I forgot to mention in my previous reply that the sound server is in the Trinity Control center --> Sound & multimedia --> Sound System. Then look into the Hardware tab (although you have solved the issue already).
Cheers Michele