The MIDI Music Editor MusE uses a custom file format to store its song files. This format has changed
between MusE versions 0.6 and 0.7 in incompatible ways. The utility muse-song-convert is able to convert
songfiles from 0.6 to the new 0.7 format, so old songs can be loaded into new versions of MusE. It is not
possible to convert a new song back to the old format. To prevent data loss, muse-song-convert does not
modify the original songfile. Instead, it copies and converts the original songfile as
songfile.converted. The process is meant to retain all information in the converted songfile, but may
not be perfect in all cases.