Ok, it's pretty simple. Whenever you hook your Siren MP3 player to the computer, you should see a folder named Voice Recordings. When you see that, you click on it and if you have any files in the folder, that means you have voice recordings. Then, all you do is just delete whichever ones you don't want. If you have radio recordings and you want to delete those also, you just do the same thing but, with the folder named Radio Recordings.
Luke, February 2007