The tender speaker that came with the Polar Express is just ok.  I would love to connect it to an external speaker through my IPAD I have controlling the train.  No matter what I do, I can't get the sound from the train to the speaker.  All other IPAD sounds go to the speaker I have connected perfectly. 

Is this not possible?  I would assume this is to be a bad idea of Lionel if not.  Would be very cool to hear the sounds on a big speaker.   

Thoughts please are welcome!!  We love trains!!