Sorry sir, but you have the wrong forum. This forum is for discussion of the anime & visual novel game called
Shuffle!, not Apple's iPod Shuffle.
However (and pardon me fellow forum-goers for going off-topic to respond here), having experience with iPods myself I would say your best bet would be to connect the iPod, run iTunes and then choose to restore the device's factory settings. That should wipe all the data currently on the iPod including its identity.
In the future, I would strongly suggest for you to ask questions like this on an Apple or iPod-focused website or forum and not in a forum for fans of an animated series/video game from Japan that happens to share a name with one of Apple's devices.
