In the Preferences Dialog, you can choose between several different filenames
and directory hierarchies to save the music files. But you can't enter a custom
filename template like <track no>.<track title>. It would be great that you
could create new templates, like you can do with encoding level. This would make
SJ still easy to use but more powerful.

Just adding in the combo box a 'Custom' entry which would open a dialog to enter
a new template would be cool.

(I report on this because saving music to portable music player with little
screen need you to choose really short filenames to read them. The existing
filenames templates are too long for this.)