The tags are written but they are corrupt. If you view the mp3 in Ex Falso it shows the corrupt tags. Alternatively you can view the file in a hex editor and see the tags at the beginning of the file.
-- When creating MP3 Files, no ID3 Tags are written https://launchpad.net/bugs/61639 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs