1. Make a recording of something in the "Record and Edit A Sound" function.
2. After you have the recording, go to the main menu of the DSi Sound Application and wait about 1-2 minutes.
1.Turn on your Nintendo DSI
2.Click on the "Nintendo DSI Sound" icon
3.Once the application has started tap the "Play with your music" icon
4.Select the song you want to play
5.Press the "UP" button on the control pad
6.You have found the hidden... more