I just got my MX500's today and they sound great but they do not fit the best. I thought I remember reading a post somewhere about different types of pads (rubber maybe?) you can put on them that helped the fit. If anyone knows anything that can be used, please let me know. Thanks!

I also have the MX500's and bought some "In-Ear Headphone Silicaon Replacement Pads" from Radio Shack. They make the 500's a little more comfortable for me, but I think it does affect the sound a little (seems to muffle them a little). But, then that might just be me...