Alarm clock ringtone list editing

I was looking to change my wake up call on my Z10 alarm clock. Now I don't have any downloads and only 3 options were available. There is an "Add Music" and "Try It" button. By mistake I added a voice tone to the list and now I cannot delete it. I can change my alarm ringtone to the previous one but I can not delete the unwanted one from the list. There is no delete option or button on the settings menu. Does anyone know how to delete an unwanted alarm clock ringtone?

Posted via CB10