Bike speaker

This link is just something I found on Ebay.

Also that ipod speaker before looks like it'll work with any other mp3 player as well. It says for the ipod but that's probably because all the ipods (I don't own one) have thier headphone jakcs at the bottom so it's more convienent for the ipods to stick in but if you stuck your mp3 player in I'm sure it'll play as well. Heck if you need to have a female-to-female adaptor then that will allow you to place that mp3 player anywhere you want without being stuck on the speaker.