Parent tag in main window informationbox is not disabled in readonly mode
If Music Archive’s schema system is changed to display the ID3v1 exists tag in the main window’s informationbox, then the tag is not disabled if Music Archive is started in readonly mode. This makes it possible to remove or add an ID3v1 tag from mp1, mp2 and mp3 files, even though this should not be possible when the system is in readonly mode.
The problem only exists on Music Archive installations where the Schema database has been changed, and Music Archive is used in readonly mode. Default installations are not effected by the problem.

The problem can be fixed by changing the ID3v1 exists tag to readonly in the SchemaDB file before Music Archive is used in readonly mode.