Poor Bluetooth audio quality and delays on Dell Latitude with Windows 7
Bluetooth audio headsets are a complete nightmare, and worst when we talk about A2DP. If you want to use your Bluetooth headphones and guarantee music continuity, I recommend you get Bluesoleil which is a software that overrides the OS Bluetooth driver. You might get a much better performance than the one you're experiencing but still you'll keep getting the audio delay since, unfortunately, that's the way A2DP technology was conceived.
The same type of issue for me was resolved by buying a USB external dongle and installing the software. I am using now a Rocketfish one that works perfectly.
Bluetooth is not as good as it promises as I even have issues with delays on my phone and computer from time to time but getting better hardware helps.