Crazily, I have also built a (rudimentary) similar project out of Flask, Backbone, and HTML5 audio (and Mutagen, of course). It's a piece of a larger music-management puzzle:
http://beets.readthedocs.org/en/1.0rc2/plugins/web.html
Anyway, zx2c4's project is obvious slicker than mine.
It's somewhat crazy that all the people on this thread saying "hey, me too" are only now finding each other. I think there are some pretty clear opportunities for collaboration here. In particular, I think it would be prudent to informally standardize a REST/JSON API for music collections so these tools can interoperable. (I'll send you email about this, zx2c4.)
I've looked at this one, actually! Are you the author of beets itself?
beets is a great music importer. A few months ago I wanted to write something like that — looking up releases in a central repository, automatically correcting tags and renaming. But I hadn't got very far, so I abandoned the project when I saw you had already done it way better.
I would prefer if it pulled data from Discogs instead of MusicBrainz. Have you considered using the Discogs API? In my limited experience, MusicBrainz disappoints me by "correcting" tags to something wrong because there's a typo in the DB, or changing the typography ("and" -> "&", "... (Part One)" -> "..., Part 1") in a way that doesn't match the official track listing. Also a very, very large percentage of albums I run through beets aren't in the MB database at all. I think I'm spoiled by how good Discogs is: these problems would mostly go away. Last.fm's data might also be an improvement, though it's not on par with Discogs.
> it would be prudent to informally standardize a REST/JSON API for music collections
This sounds cool. If you come up with a spec for this, I'd like to know too (email in profile).
Anyway, zx2c4's project is obvious slicker than mine.
It's somewhat crazy that all the people on this thread saying "hey, me too" are only now finding each other. I think there are some pretty clear opportunities for collaboration here. In particular, I think it would be prudent to informally standardize a REST/JSON API for music collections so these tools can interoperable. (I'll send you email about this, zx2c4.)