My grandmother is a music teacher with a 1st generation iPod that has recently died. She doesn't need to store a great amount of music on her iPod (she only uses about 2-3gb), so I'm wary about telling her to get a bigger iPod. Would it be more practical to replace the battery or buy an iPod Mini? Would it make sense to replace a battery on a first generation iPod or is this an unreliable method?