Best case to use with radio remote

[StrikerTek]

So I'm buying an iPod nano for my mom, and I'm trying to decide which is the armband to buy her. She needs to use the radio remote with the nano to tune in to the audio streams for the TV's at the gym she works out at. You can see the TV's while you work out there, but in order to listen to them, you have to have your own FM radio.

Does Apple's armband or any of the Marware ones have space to wrap the extra cord around and space to plug it into the bottom of the case? Which one would be the best for accommodating the extra cord? Or would it be better just to twist tie it up or something?

Thanks for the help!