Most computer's have a LINE IN port where you can plug in a radio or something. You could use a computer speaker cord for this.

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OMG!!!! osxdude's signature changed! [quadhundreddruple n00b typing is now on] WHAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHH! (osxdude is still crying) [quadhundreddruple n00b typin is now off] I know it's not common it's just.......Khaula's being mean to me!!!!! (osxdude will cry until Khaula says sorry) I lol'd OMGOMGOMGOmg