Nothing, NOTHING, will drive me away from a blog faster than a pop up song. I do a lot of my internet surfing while at work, as I'm sure MANY people do, and when you're in an shared office or cubicle (in my case a laboratory) with 30 other people, you don't want them to suddenly hear music coming from your computer. The instant I hear music, I close the browser never to return. This isn't an uncommon occurrence. In fact it happened to me last week. Now I could turn the volume off on my computer, but then when I get home (I have a laptop) I'd have to remember to turn it on again, and that's inconvenient. I won't do it just to accommodate websites that feel they have to entertain my eardrums. Really folks, if you want to share your love of a song, then put it as a link to a picture or something. You want people to listen to you, not a song. So put the tunes away for another time.
That is all. :)