Do so now! Seriously, it’s a lot of fun. My favorite feature of Nintendo 3DS Sound is the ability to switch among several unique visualizations. (Helpful hint: some of these visualizations can be played.) There is also a control panel that allows you to manipulate the music by altering speed and pitch.
Don’t expect the 3DS to replace your iPod, but this is definitely worth checking out. Once you’re done, remember to return to Infendo and tell us what you think of Nintendo 3DS Sound!