As the creator of that old game (which is long gone), I can say there are still people coming back asking for the theme song, which apparently, they can't stop listening to once it's started playing.

Haha I liked that flash game - my favorite level was the one where after you hit start the word didn't disappear for a second or two. Appreciated that that trick got me.

Also looks like it's still available here: http://www.rrrrthats5rs.com/games/dont-shoot-the-puppy/