So, I decided to try out something, and used the headphone jack on the 3DS to connect to the Line-In port on my computer, allowing me to listen to the sounds the 3DS is making on my computer's nice surround sound system with a subwoofer, and I just have to say one thing. It sounds fucking amazing. The music in this game is designed for something better than the 3DS' speakers. It's all orchestrated, it's not MIDIs, and it's fantastic.

My favorite song, the Bike theme: http://www.youtube.com/watch?v=fyoeAzBvZM8

On a related note: X/Y SOUNDTRACK WHEN?