There are a lot of great audio players for Windows, but in this day and age of multipurpose media centers that load lots of plugins and whatnot, sometimes you just want a simple player to launch and play a track. 1by1 is that player. It's basically like Explorer for MP3s - launch window, find file directory, play file. No muss, no fuss. Add a few play modes, an easy-to-use playlist option and you're golden.