This has happened to me several times, and each time I eventually determined that it was the fault of a corrupt mp3 file incorrectly reporting its length. You can use mp3info to try to identify the offending file(s).
-- xmms reports very large and/or negative track duration in playlist https://launchpad.net/bugs/57016 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
