first off
I do not know the rules on this forum regarding piracy, so I will not give any links. I am going to assume that loopy does not allow that. He could respond to this post on what is allowed...
With that being said. The mod allows to play the DS on a Computer/TV. I am going to assume that allot of everyone here wants to enjoy the 3DS with the comfort at a distance from their Monitor/TV with another controller. I am going to take a step further again and assume that allot of people will also put custom firmware on their 3DS. Their is custom firmware that allows you to use other controllers like xbox one controller. I will not put any links, just the names of the software. The most common 3DS custom firmware used is Luma3DS. Luma3DS custom firmware has an application called "Input redirection" that allows you to use other controllers.
CF: Luma3DS
Application for other Controllers: Input redirection