Developers are getting plenty of toys alongside Windows Phone 7's "Mango" release, but there may be extra baubles for regular users, too -- Microsoft will reportedly add a few features to Bing in the near future which could prove particularly useful. According to the latest episode of the Windows Phone Dev Podcast -- which hosted Microsoft's Brandon Watson as a guest -- a new function called Bing Audio will act like a Shazam for recognizing music (and will sell you Zune tracks) while Bing Vision will use your smartphone's camera to read barcodes and do optical character recognition, p