Hi,
thank you for your reply. However it was not successful to install the beta.
On Macbook it booted, the initial setup failed to provide me selection for SPDIF - the selection field was greyed out after my first try to push it, and I selected next a couple of times to get it going past that. After initial setup I was able to enter settings, and selct SPDIF as output. I did not work however, and still there was no light emitting from adapter (like before).
I shut it down, and moved USB to Mac Mini. During boot, it said selected output was not available but continued boot. After it was up and running, I went to settings and set it to SPDIF (which was an option anyway), and continued to play a song. When I pressed play I had the same ‘Error Failed to open “alsa” (alsa); Failed to open ALSA device “volumio”: No such device’. So that was pretty much the same as last time, but this time there was no light emitting from the toslink adapter on the Mac Mini, just like on the MacBook, but unlike what it did before, where light actually was emitting from the Mac Mini.
So - unfortunately…
Thanks Flemming Smit