Nintendo Dsi Sound is a fun app if you have nothing better to do with your time. It allows you to record a few sounds up to ten seconds long, but no more. The app has limited save data but instead of the limit being in seconds it is 18 ten second sound clips. It probably would have been better if one could record one three minute recording, or two1 ½ minute recordings, or 36 five second recordings. Also, the app can’t put recordings on the SD card for extra space. Another issue is that the app can only use the AAC format for sound recordings, so one must use Itunes to go in and convert every song to AAC one by one. A good thing about the app is that it allows you to use your recordings while playing music. This app is a waste of time. It is fun only if you already have an sd card and AAC formatted songs.