I am sad to say that I have submitted a 2.5.7 update of AirMusic to the AppStore, back in June 29th 2014.
The app, which fixes background disconnection, went in review on July 7th and since then, it is stuck in limbo with no feedback other than the canned responses from Apple AppStore review bots.
I have sent 3 requests for updates and even asked to expedite review to see if it helped, to no result.
Please, tweet or repost this on Facebook. Maybe this will help get an answer from Apple.
AirMusic was finally approved today. See http://www.plutinosoft.com/apple-a-love-hate-relationship/.