I spoke too soon… The ripping was very quiet and I had to periodically refresh the web page to track the progress. A CD-Rips folder appeared in my internal storage music directory once the ripping was complete. It took about 20 minutes. There was no meta data - just track 01 etc …
This sounds exciting and whoever builds this has acquired a lot of computer knowledge.
The question now is in which format the CD was ripped. With WAV it doesn’t work so well with the metadata yet.
Audiophiles with powerful audio components like to take FLAC in the best quality level. OGG is the alternative for cell phone users. Here, the formats that Apple and Microsoft used are probably slowly disappearing. Even MP3 is no longer the best low level choice. Opus not yet so widely used. Open formats will help with system changes later.
The advantage of Rock should probably be that the core is not distracted by other applications. But when other players, taggers and music programs come into focus, one can consider to use a more extensive Linux distribution (Manjaro in my case) with Wine-GUI on the Linux server. So all other needed programs (see illustration) are immediately in the beginner’s area in the access.