Resound Azure Direct Audio Input (DAI) users?


I am considering a purchase of either the Azure or the Pulse Open Fit aid, but I have a question. Is anyone using the Direct Audio Input feature of the Azure aids at all? This could be a really useful feature for me, but I am unclear what is needed (cables, connectors, etc.) to provide audio input from a source such as an mp3 player or radio transceiver.

Any help is much appreciated.

thanks - john