To all those complaining about volume buttons - it is not the only way to control your volume.
go into your DSi sound channel,
choose play with your music,
choose a song,
play the song and look at the screen!
their is a volume slider on the bottom left of the screen!
FULL VOLUME CONTROL - NO STEP GAPS - FULL CONTROL
this will not work in DS games obviously but with your music you have full control and nothing less.
will you lot ever play with your DSi to find these things out for yourselfs? noobs
On another note if you close the DSi while playing music it will turn itself off (Bahhh!) but plug in your headphones and then close it and it will carry on playing music and you can add drums with shoulder buttons still.
...and another thing... if you record a sound and save it, put your DSi down for a minute leaving it on the recording selection screen and it will magically play your recording as the Mario Bros soundtrack! absolutly amazing!