sure, happy to. All courtesy goes to the support pages of HifiBerry: support.hifiberry.com/hc/en-us/ … -or-higher
I did the edits probably not in a very efficient way, but I physically took out the SD Card, put it in my pc (windows/mac OS) and opened the config.txt files with a simple text editor. there I made the change, saved, put the SD back in the raspberry, booted, and the hifiberry digi+ appeared in the volumio set up pages for me to select as audio output, after which my coax connection started working.
these are the steps, as described in the link:
remove the line “dtparam=audio=on” from the config file located at: /boot/config.txt
Then I add a new line to the config.txt file, I basically put this new line in the position of the one I deleted, not sure if it matters which line it is.
For Raspberry Pi 1/DAC+ Light/DAC Zero/MiniAmp you add: “dtoverlay=hifiberry-dac”
For DAC+ standard/pro you add: “dtoverlay=hifiberry-dacplus”
For Digi/Digi+ all models you add: “dtoverlay=hifiberry-digi” (this is what I did)
For Amp+ you add dtoverlay=hifiberry-amp
btw, if I may ask a favour in return, I had also entered a post in the forum to ask if volumio supports m3u playlist files. My goal is to load a usb thumb with music files, and a m3u playlist pointing to those files. Ideally I could then in volumio play the playlist, and therefore play the files from the usb thumb in that playlist order. is this possible? is there a site with some documentation?