DJ Mixer N-series is a java application from Nokia will allow its users to record songs and then re-mixing them with other tracks on your Nokia N-Series.
 

DJ Mixer has 2 functions, mixer and karaoke. With DJ Mixer you can create your own playlists or load an existing playlist from within the the music files on your device. for karaoke You can load your own MP3 from your device and record and save your own karaoke tune.