I’m sorry to disagree, but it seems that you’re all being confused, and you don’t quite understand which is the purpose of an app, and which is the function of a controller, I’ll try to be as clear as I can (I’m not expert here, bare with me).
Algoriddim designed an app (Djay, now Djay 2) which is installed into an iOS device (iPhone, iPod touch, iPad).
They design and mantain the app, they’re responsible for the app functionality and it’s interaction with both iOS and the Hardware (iPhone, iPod touch, iPad).
Then comes Numark, with iDJ PRO, that is a controller (guys, the name speaks for itself, it’s nothing but a CONTROL for Algoriddim’s app). Algoriddim provides new display and extra features enabled for use with iDJ PRO, but Numark is just the maker of a physical device to control an existing app (Djay app) nothing else!
So for the use with Numark’s iDJ PRO, Algoriddim provides, among other things, the “split audio” feature, that enables you to separately listen to two diferent tracks (with just the iPad or just the headphones line-out this is not possible). this gives you the cueing possibility with iDJ PRO.
Everything was fine and dandy until iOS 7 came to town, and changed something in the core audio, causing Algoriddim’s implementation of split audio to start behaving inconsisntenly.
If you have read the work-arround post just above yours, you can see this is completely related to software. There’s an issue between the app and the new iOS, they’e not getting along well, but it has nothing to do with the controller!
The bug happens to be in a feature used by the iDJ PRO: the split audio.
But it’s NOT in the iDJ PRO itself!
This should be clear for all of you.
Numark is working together with Algoriddim for this, that’s already good news!
But really, Numark is the manufacturer of a controller made for an app. This app suddenly stopped working properly due to an Operative Sistem upgrade.
So, the control of the features is not the issue, Numark should not be taking the blame in this. It’s the feature itself that needs to be corrected. So put the pressure on Algoriddim. I’m confident they’re close to fixing the issue by now.
What Numark could do at best is to freeze iDJ PRO sales until Djay app is stable again, but it’s not iDJ PRO breaking the app. It’s iOS new core audio.
I can’t say this enough: iDJ PRO → App Controller
Algoriddim’s Djay app → Application
Problem lies between application and Operative Sistem resources (audio)
Leave iDJ PRO out of the equation, as it’s not really the faulty link.
P.S.: I’m an amateur DJ, I in NOT way represent Numark or it’s interests. I happen to be also a Computer Systems Engineer and for this I have some very general understanding of this issue. I take the opportunity to clarify not in the interest of Numark, but in the interest of what I believe is the real root cause of the issue here.