Computer services, including a computerised database accessible via the Internet, wireless telephones, and personal digital assistants (PDA's) which allows the user to listen to an artist's versions of sound recordings and manipulate and arrange the sounds, save the user's new sound version and play back the new sound version; providing a service whereby consumers can create customised ring tones online by mixing a tone from database of sounds and download the ring tone to the consumer's wireless telephone or personal digital assistant (PDA)