URGENT!! HELP!! Local disks on my iPod's DCIM

Okay so I don't know if anyone has had or having the same problem as me but, 10 local disks have appeared on my iPod's DCIM and it won't let me remove them. I don't know how they got there but I urgantly want them removed right now as they're taking up my iPod's memory.

Please someone help me

I would be forever thankful.

(my iPod is a 4th Generation and I am using Windows 7)