... I've always loved the sound of a Radial engine. Attached it the mp3 that plays when I start my computer and I have one that plays when I shut it down. ...
In FEB 2014, I had the great fortune to be able to fly two different radial engine aircraft. One was a Boeing/Stearman N2S-3, and then a week late I got to fly some aerobatics in a WACO VPF-7.
The missus took a vid of me in the VPF-7 while we were on the ramp getting ready to go out and have fun.
If you like the sound of radials idling, you will love the sound of this one: