Quote Originally Posted by Lao Jia Hou View Post
It would be easy to splice in a 3-way switch - so a person would have the option of walkie talkie, or mp3 player, feeding into the ear pieces, but one would cut the other off. The FM radio that is included in my walkie talkies is automatically over-ridden when an incoming communication is received. There may be some walkie talkie out there with an mp3 input jacks, but I haven't seen them (I was shopping in the lower end of the price spectrum).
You could also plug one of those FM transmitters into your mp3 player and then tune into the signal on your walkie talkie. That would probably work quite well since the walkie talkie cuts the FM during communication.

Does your setup have VOX or just PTT?

Cheers!
ChinaV