Minimserver 2 API ?

[simbun]

I've performed a few batch updates before with a similar scenario (the new tags come from local files), but while it may not match all of the requirements (you seem to want to do it directly on the Synology) I thought it might be useful to others.

I use a component of foobar called m-TAGS. To use it, you point it at your music folder (choose to have it create files in a separate folder) and then at a target location, at which point it creates a folder hierarchy that mimics the source, inside each of which is a text file ("!.tags" by default) that represents all the music contained in the associated folder, with pointers to the music itself, and all the tags present.

From this point on, you can simply load these files into foobar and have all the functionality that would be available as if the music files had been loaded themselves e.g. playing, tag editing e.t.c., the only difference is that changes aren't reflected back in the music files themselves, but in the M-TAG files.

Whilst the above usage scenario is very powerful (you could create different views of the music without modifying the original files, or for testing changes), because the files are just tag based text files it's trivial to modify them (I used shell scripting), test them back in foobar, and then apply the M-TAG tags back to the music itself.

I store my music as one file per track, with cue files only where the flac's themselves don't verify with AccurateRip e.g. if the CD contains PREGAPS or DATA tracks, so I had to exclude CUE files from the scanning otherwise M-TAGs would duplicate the tracks, so obviously test this on a subset first.