Hi.  Tried it with Jaws and NVDA, and I must say NVDA is slightly ahead in accessing the interface.  From my initial findings, it is not good with speech synthesizers because there are bleeps when, for example eloquence is speaking, especially when you are previewing text with the arrow keys.  Good for music and audio played through third party apps like Winamp or Groove music though.  I am still experimenting.  Will come up with something in a bit.  Cheers!