Just get a set of white earbuds / black earbuds / pink earbuds / "x colour" earbuds to complement whatever your DSLite is coloured with.
I for myself use in-ear buds to get into the game, even in the back of the bus or on the subway line. This allows me to play music games / games requiring sound to be fully enjoyed without having all the environmental noise encircling me as well as preventing my ears from getting severe damage.
I personally would go for JVC Marshmallows for cheap (but GLORIOUS SOUND) for the price you get. They are in-ear buds, they sit just a bit inside your ear canal, but not as deep as in-ear monitors like the Sennheiser E series. They can be acquired at most retail electronics store (FutureShop, BestBuy, etc.).
If you want to spend a bit more, get the EP630s, they are not much more expensive (5-10$ more, sometimes even cheaper than the Marshmallows). In Canadian $, a good deal is 25$, 30$ is still good.
These two models are excellent for entry-level audio enthusiasts, and are terrific choices at replacing the horrible signature-trait white earbuds you get when purchasing an iPod. They are the best of their class before you end up shelling out 100$+ for high-end audiophile headphones and earbuds.
Here are the JVC Marshmallows, called HAFX33 :
http://www.headphonesrock.com/JVC-Marshmallows.html
Comments on an audio forum regarding the product :
http://www.overclock.net/sound-cards-compu...35-earbuds.html
And the EP-630s by Creative :
review :
http://www.trustedreviews.com/mp3/review/2...0-Headphones/p1