what what?

there are a million flat screen tv's at the gym. i can watch them, but i can not hear them. they all have radio station #'s under them. i realize this means i have to have a radio to tune into that station to be able to hear that tv. what i do not realize is what can i buy so i can tune into that station so i can hear the tv's?? and where can i buy this object? and how much will it cost me?

also, my ipod says "do not disconnect"- but my itunes will NOT work so i have no way of disconnecting the ipod besides just unplugging it, which i know is bad news. any help out there? guess i'll leave my computer on until some one has an answer...