Jul 19, '05 08:08:00AM • Contributed by: barryjaylevine
iTunes' MP3 files are given a type of MPG3 and a creator code of hook (note that these are case-sensitive). So if you have MP3 files which appear in your iTunes library listing as QuickTime movies, use a utility like DropCT (or a hundred others) to change their type and creator codes. Then launch iTunes, sort by kind, do a Show Info on the first QuickTime file in the list, and press Command-right arrow (or click Next) repeatedly until you move through all of the 'bad' files. As you move through them, they will magically be corrected as iTunes loads the file and realizes they are now 'good' files.
Note that you may, instead of the above process, do a "convert to MP3," which will give the newly-created files the proper type and creator codes. However, this may yield a lower quality file due to transcoding.
[robg adds: If you have the Developer Tools installed, you can use SetFile to change the type and creator codes. I tested this hint with an MP3 without any type/creator information, and it worked just fine. So it's just those files which have been tagged with MPEG that will cause issues ... but I don't know which apps might be doing this.]
