How to use Izicast: Simple iPhone & iPad Broadcasting 

If DJPro would support Audiobus (older versions did) you could pass your mix to iziCast through Audiobus. Have a look at their forum. Other users requested that feature as well. Maybe they add support for Audiobus again if enough people request it. Another approach would be to use an external audio interface that you use to loop back the output of DJpro to the input and select that input in iziCast. But make sure that the audio interface has a monitor output so you can listen to your mix.

You can use any class compliant audio interface. According to the ZOOM podtrak P8 manual it has a class compliant mode, so it should work.