photo's has it's own folder roughly in the same location, why would you need to seperate them anyway? Apple have put a file system inplace for the touch to read off, if you start organising stuff it's just gonna cause you problems...... besides how often do you even look at the files or let anyone see the files? it wouldn't matter they have folders in particular way as thats how the device reads the files.
if you look in the sub folders you will see the music is actually labeled in a weird way the names are no where close to being what the names where on your mac/pc. don't mess with the file system cause you will only just have to re-sync your music if you mess with it