However it had several problems - notably, its window has to be kept open and cannot be minimised to the notification area. This answer originally recommended a UWP application - Bluetooth Audio Receiver to open the connection. Without said application, audio from your device will not be piped to your PC, despite the device might be shown as 'ready' in sound control panel. However, while Windows 10 BT driver did implement A2DP Sink protocol, you still need an application to explicitly open the connection to your device. In the codebase of Windows 10 preview builds, references to Bluetooth’s A2DP Sink feature has been spotted again, suggesting that the feature is making a comeback.
Microsoft is re-adding A2DP sink support to Windows 10 in version 2004. If you are running Windor newer (which you should), download and run the excellent open-source program AudioPlaybackConnector and you're good to go.
