I have no clue what to put in the left saddlebag to play music off of. Do you have to purchase an IPOD? Electrical stuff and myself are like dynamite and matches, we get together and its game over. I thought I was doing the right thing hooking up an MP3 player in the left cubby but now I am not so sure. What do you plug into the USB port that I didn't even know was there to play music with the controls on the handlebars?