Is it possible to run a beets plugin on files that are not in the library? I have files that I do not want to put in my library because I want a clean one format library without file corruption. Re-ripping my library is taking forever, so in the meantime, I wish to listen to both sets of files. The problem is, my old collection has different replaygain settings. It would be so easy to run the beets replaygain plugin on my old files to correct the volume difference.
Is there a way to do this?