A method and an apparatus for customizing an audio file, such as a ring tone stored in a mobile device is described herein. In particular, a mobile device according to the present invention includes an audio utility and an audio processor. The audio utility stores one or more pointers associated with a stored audio file. Each pointer identifies a specific user-selected start position for the audio file. Whenever the audio processor plays the audio file, the audio processor plays the audio file from the start position identified by one of the user-selected pointers.