I want to keep track of the cds I ripped by providing a unique id in the flac metadata referencing the cd. I mark the cds with a glue label with consecutive numbers.
Now I discovered that I inconsistently used the tags DISCNUMBER and DISC for this. In fact a tagging program I used before used DISCNUMBER and with beet I used DISC.
If I am correct DISC is not an official tag so my hope is that beet will never overwrite this tag with a value from MB. Is that correct?
What shall I do now?
Can I bulk copy the value of DISCNUMBER to DISC with a beet command?