I don't see why you are all telling him to move ringtones and fonts.
Those you don't need to move.
Here is the situation:
Your iPod has 2 partitions. A 300mb one for apps, ringtones, fonts, and the rest for music, movies, etc.
As you install apps you will need to free up space in the 300 mb partition. Moving ringtones will free up space, as will fonts. Nevertheless, as you continue to install more apps, they will still go in the 300mb partition. Soon, it will tell you (again) that you need to free up disk space.
If you move apps, they will go in the bigger partition and will create a symbolic link between the 2 partitions. Any time you install apps, they will go in the larger partition. Even if you do not move fonts and ringtones, that partition will not fill up any more unless you install ringtones or fonts (unlikely, especially on an iPod).
So, you can just move apps and be on your way.
Finally, some apps (like games that you can save) create more than just the app when you install them. For example, TTR will add a "TTR" folder in /var/mobile/media that contains "Music" and "Taps," both of which will still be there if you uninstall TTR.
Because of this, I generally refresh every once in a while to clear up those leftover files.
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Thank me if I helped.
