first you need to jailbreak your ipod,
install SBSettings, then get iFile
Navigate (in iFile) to;
/var/mobile/Library/LibHide
Then edit the txt file and add;
Code:
<string>com.apple.mobileipod-AudioPlayer</string>
<string>com.apple.mobileipod-VideoPlayer</string>
And use connon sence (e.g. if u want music hidden, just add the music command)
Then save > done > respring
then your done ;D

NOTE: only hides icon, you can still search for it and it comes up

Credits; Jontron123 (on another website)