Can the Fuse be Defragged?

Both 256 and 128 had been ripped in MP3 in WMP 11.  Before I had the Fuze I knew we would be getting a MP3 player soon so I started ripping…  I have a good ear and thought 256 would give me a better copy better sound but after getting the Fuze I hear no difference between 256 and 128 so I thought I would save some space and rip all the music to MP3 in 128 compression…  Does this help? Thanks! George