Sudden, incredibly loud burst of static

I have a Macbook pro 17" from 2009. Just tonight, I installed Yosemite (10.10.2 (14C109)), and it upgraded iTunes to the latest version (12.1.0.50).

Processor: 2.8 GHz Intel Core 2 Duo

Memory: 4 GB 1067 MHz DDR3

While reading, I am listening to a playlist of ambient sounds -- birdsong, babbling brook, ocean waves -- on my bluetooth headphones (Inland ProHT 87091) when without any warning an unbelievably loud burst of white noise bursts out of my headphones. It's incredibly startling and painful.

It has happened now four times. If I pause playback for a few seconds and begin again, it goes back to normal, but I'm now scared to chance listening to anything for fear that it'll cause problems. My ears are still ringing from the last four times.

Has anyone else experienced problems like this? If so, how did you fix it? I have no idea what could be causing it other than iTunes or the headset, and I have literally used the headset daily, for hours every day, for a couple of years. Never had a problem until updating to Yosemite and updating iTunes.