The zero plugin allows you to null fields in files’ metadata tags. Fields can be nulled unconditionally or conditioned on a pattern match. For example, the plugin can strip useless comments like “ripped by MyGreatRipper.” This plugin only affects files’ tags ; the beets database is left unchanged.
To use the zero plugin, enable the plugin in your configuration (see Using Plugins).
Make a zero: section in your configuration file. You can specify the fields to nullify and the conditions for nullifying them:
For example:
zero:
fields: month day genre comments
comments: [EAC, LAME, from.+collection, 'ripped by']
genre: [rnb, 'power metal']
If a custom pattern is not defined for a given field, the field will be nulled unconditionally.
Note that the plugin currently does not zero fields when importing “as-is”.