Since listening to music using mobile phones has become a normal situation, companies have started to think about developing new tools within the music field. Thereby, one of the fields in what they are working on is to enable users to put effects on their music while listening to it. One of the most popular techniques for manipulating recorded sounds is scratching. To scratch is just a variation in speed and direction of a sound file. These techniques are the presentation card of DJs, who implement them using a turntable and an audio mixer. The purpose of this project is to design and implement a system which enables users to use their handset for manipulating the sound by using different tools, being one of them adding DJ scratching sounds on top of their music while listening to it from their mobile phones. The application is developed by using Python, and designed to be used on Nokia mobile phones.