[Zubersoft]

I don't currently support sorting on all of the metadata fields. You can certainly add the composer tab, and as you've said, you can filter on the other fields, but you can't group or sort the data based on other fields. Grouping it based on things like composer or genre would require a lot of significant changes to the way songs are grouped and visualized on the library screen, so that's not something I can commit to anytime soon, but adding more sorting options is something I can support sooner. You'd have to change the song title formatting to display the field you want to sort on in order for it to make sense though.

Mike