Sleepy Joe is a very simple audio player with one useful feature: it can shutdown your computer after playing all the songs you've selected. It's meant to play music while you're falling asleep in a simple way: drag your music into the player and hit play!
I programmed it in C# so you'll need the .NET framework 2.0 which you probably already have installed, but if you don't just hit the link
Hope you like it! If you find something you'd like to add to Sleepy Joe, leave a suggestion!