Errors encountered in play list

Binary package hint: totem

I have 125 songs in a play list, all .m4a format. The player sometimes will fail to play one or another song, with no indication of what the error was. This happens when I make up a new list, or change the order of a list that formerly played ok. I can find nothing wrong with the file name, and I can play the file by itself. I move the offending song name to a different place in the list and then it plays, although another song might fail to play after such a move.

ProblemType: Bug
Architecture: i386
Date: Fri Nov 30 00:57:25 2007
DistroRelease: Ubuntu 7.10
ExecutablePath: /usr/bin/totem
Package: totem-gstreamer 2.20.0-0ubuntu3
PackageArchitecture: i386
ProcCmdline: totem
ProcCwd: /home/vern
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: totem
Uname: Linux vern-desktop 2.6.20-16-generic #2 SMP Sun Sep 23 19:50:39 UTC 2007 i686 GNU/Linux