Everybody loves to listen music and MP3 is what everyone has nowadays. As a proud owner of Nintendo DS, I am going to show you that your DS not only can play games but also listen to MP3 songs. The DS Slot 1 device for
the Nintendo DS is the ultimate multi media accessory for Nintendo DS. This DS Slot 1 is for the popular R4, DSTT, Supercard and many other flash card series.

First of all you’ll need to grab your collection of MP3 music,
and copy and paste your MP3 music from your PC hard drive over to your microSD
Card.  This can be done easily by inserting the microSD card into the
microSD card reader/writer that comes bundles with the R4/DSTT DS.  Your
computer screen will show a pop up, asking you to play / search for media files
on this removeable drive, or to open the drive to view files and folder. 
We recommend you open the drive for your files and folders, with another Windows
Explorer window open, so that you can easily drag the files from your Hard Drive
to your microSD card.  STOP! Before you do so – we also strongly
urge you to make a folder on your microSD Card with the name MP3 or MP3 music. 
You’ll want to separate your MP3 files from your game / homebrew files, etc…

You’ need to loaded up a 3rd
party application called MoonShell which enables your R4 DS/DSTT
to listen to music, read ebooks, show of your latest digital photos and even
watch movies.Now that the MoonShell software has loaded up, you’ll once again be greeted
by a menu system – this time the moonshell menu. Select the music file that you want to play and Moonshell will play the song for you.  Now all you’ll
need is your headphones and to plug them into your Nintendo DS.