I've been thinking about the possibility of making a folder tree for talk clips that the database menu uses. Let's say .rockbox/dbtalk where rockbox would use the .talk file corresponding to the database menu option if it found one (.talk file, that is). Although I currently have no idea how hard this would be, it sounds like it wouldn't be too complicated.
I understand it would make it cumbersome to keep up with the .talk clips should one change the tagnavi.custom file considerably, but it seems worth it.
I'd like to know some developer's opinion on this subject, and if no desire can be found to establish this feature, maybe a few pointers to a newbie...