Are you using Vista?
I am having a very similar problem. My HP Laptop, few years old, recently began BSoDing every few hours. I would have Google Chrome up and I would be listening to a YouTube video, Empire State of Mind, and all 4 times or so it was the same exact song.
Scanned my comp, nothing turned up 'cept for once when it found malware. But it supposedly removed it. Any ideas?