…or at least that I know of =D. Here’s how (for touchscreen WinMo devices):

1. Get the song over to your device either on main memory or a storage card. You can do this by connecting the device to your computer, going to My Computer, and copying and pasting the desired song or sound file to a directory.

2. Once on your device, open up a File Explorer and navigate to where you placed the file. Then, tap and hold on the song, and do “Set as Ringtone” as shown below.

That’s it!