I've been using Bliss to sort out my aged and varied collection and it's working very well but... a full rescan takes hours so it would be useful to be able to recan just a part of the filesystem (eg .../The Artist).

I know that you can use Bliss to edit tags but it's much quicker to rip through files with shell commands, delete duff albums, rename artists etc and then get Bliss to check it out afterwards.

The database must know the filepath so it could verify that the files it thought were there still are (and clean it's database if not) and add any new ones.