Here at GUIDETRACKS, we highly recommend the Worship Song Band App as your playback software for playing your multitracks. All of our library is formatted for the WSB app. (Note – you MUST purchase the “WSB FILE PACKAGE” of the multitrack you are wanting.)
You can download the app at :
http://www.worshipsong.com/band/about-worshipsong-band
Here is a great tutorial that will show you all the function the WSB App offers for you.