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Auto-tagging MP3s

I've just ripped some audio CDs that I've burned a while back. Since I made the CDs, I mostly know what songs are on, but it would be a pain to rename 300 "Unknown Artist - Unknown Track"s.

(I also don't have a list of what songs are in which CD, so I can't just write a program to rename them in order based on that.)

How would you go about identifying the names of the songs based on content alone?

There are a few online services but they're not automated (none that I know of). Windows said Media Player will rename/edit tracks with missing information, but

  • I didn't/couldn't get any results and
  • I loathe everything about Media Player.

Can Winamp do this?

[EDIT] Winamp works well for the bulk of it, but is strange. Strange because it seems to properly label songs that I've shortened myself (by cutting them here and there, not just at the end).

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marked as duplicate by slhck, Ƭᴇcʜιᴇ007, Breakthrough, Nifle, MaQleod Aug 15 '11 at 21:12

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Winamp can do this - just right-click on the track, go to View File Info... And it should present you an option to auto-tag the file from the internet (via Gracenote). I don't know how it works specifically, but I assume it uses some kind of acoustical analysis and tags it with the most probable song.

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The thing you're looking for is MusicBrainz (linked in the Q I mentioned above). It would do fingerprint tagging for those tracks automatically. –  slhck Aug 15 '11 at 19:42
@slhck what I mentioned is included with Winamp (and can be run directly from it). –  Breakthrough Aug 15 '11 at 19:43
Oh, haven't used Winamp in a while and don't recall seeing this option. Gonna have a look the next time. –  slhck Aug 15 '11 at 19:44
Autotagging for albums (via services like Gracenote) fingerprint the CD itself by counting the number of tracks and the track lengths. It can't identify individual tracks based on their content (like by getting an MD5 hash of the file) since encoding may differ depending on the rip. This does, of course, require the CD to be in their database. It's not always the most accurate system, but it's the one we have. –  Ben Richards Aug 15 '11 at 19:52
@sidran32 It doesn't use CDDB, it uses Gracenote's Media Database (which can use audio waveforms). The CDDB tagger is a different plugin. –  Breakthrough Aug 15 '11 at 19:59
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iTunes for windows has an option "Lookup CDDB data" I believe. Put your CD in, open iTunes, select all of the songs and click on that. What it does is perform a lookup in the gracenote database for your song names. Worked really well for me.

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I think that doesn't work for custom cds. (as it's been mentioned in the comments above). Because I've ripped the cds with Nero and it tried to do something similar but it failed saying "your album/cd is not in the gracenote album database, would you like to add it?". –  Tudor Aug 15 '11 at 20:30
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