It did some research on this issue, and asked Bernie, Plugable’s founder and the development manager of the original Microsoft Bluetooth software, about it.
We ask users to install the Broadcom Bluetooth software, called WIDCOMM, in Windows 7, because it supports most uses much better than the native Windows 7 Bluetooth software. However, it looks like the interfaces between the software (called a Bluetooth stack) and applications are different in some respects between the WIDCOMM and Windows 7, and you have encountered one of those differences.
It seems some applications like iTunes and Windows Media Player are expecting a different interface to the audio/visual control protocol than the one WIDCOMM provides, while Amazon prefers the one you have installed. However, if we switch back to the Windows 7 stack, there are likely to be other issues affecting playback.
Issues like these have been resolved by the much better Bluetooth stack in Windows 8. On Windows 8, we recommend users to stay with the native stack instead of installing WIDCOMM. Your other devices, like the iPhone, iPad, and Surface all have more recent Bluetooth stacks that also don’t have this problem.
So unfortunately, this looks like something that can’t be fixed without likely causing other problems. If this is a deal-breaker for you, please feel free to return the adapter through Amazon’s 30-day return policy.
I’m sorry I could offer a more positive solution.