Hello. This happens to me too. I just got an iPad Air 2, downloaded the latest BIAB app, the latest BIAB desktop build on my Mac 10.9, created a song, saved it to m4a, downloaded it to my iPad, but when I open it the Play icon is red and when I press it, it shows me to "enter server IP". I need help with this ASAP, as I use my BIAB app for live gigs (I've been using a borrowed iPad Mini up until so far)!!