It seems that the gtkpod 1.0 from natty used a libmp4v2 library in order to process M4A files. The newer version doesn't nor is libmp4v2 available.
Downgrading gtkpod using gtkpod, gtkpod-data, libgpod4 and libmp4v2-0 packages from natty seems to do the trick. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/883962 Title: cannot add m4a files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtkpod/+bug/883962/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs