Another enhanced feature is the Nintendo DSi Sound application, which serves as both an interactive voice recorder and music player that allows users to play with their music while they listen to it. Users can access different audio filters or control the pitch and speed of recorded voice or music files to alter voices or change the tempo of a song. The mic is located between the two screens when the device is flipped open, and there is also a stereo headphone output that lets users listen to music saved on an SD card, even with the screen shut.
In the world of software, Nintendo DSi will be the platform for the most relevant and fun on-the-go games and applications. The Nintendo DSiWare application will populate Nintendo DSi with software that can be downloaded using Nintendo DSi Points directly to the portable system, just as WiiWare has with Nintendo's Wii console. Developers big and small are invited to create software that makes use of the properties and functions of the hardware. Nintendo DSiWare games and applications will be available at a range of values, starting at 200 points.
In addition to downloadable games, Nintendo DSi is able to play games made specifically for the system and sold at retail. The system can also play most Nintendo DS games, and will have access to a library of more than 850 titles originally made for that system.