I had a lot of fun last time dishing up old music advertisements with the corresponding mp3. I don't know about you, but I'd forgotten (or perhaps never knew) how Heads, Hands and Feet sounded. So, having a "play button" under each ad makes them a lot more meaningful.
It sounds cliche, but I really mean it: I hope you have as much fun reading/listening to this post as I did making it. I had a blast.