First off, you should talk to the developers of PLEX since they already have an application that CANNOT be beat, secondly, you will need to talk to Dan Adelman and he has shown no interest in this, trust me, I send him a tweet everyday in regards to this.
It's like you are not listening, lol... It is crazy...
You also have to take into consideration that demand is so small for this, that they most likely wouldn't even allow it on the eShop... You have to think realistically...
Just making a thread saying you are going to develop a media application for eShop is not good enough. You are obviously not a developer and have no idea how things actually work in the real world.
You may think I am coming off as a dick, but believe me, I am doing you a huge service by telling you about an ALREADY EXISTING masterpiece called PLEX. Maybe you should devote your time into convincing the developers of that and Dan Adelman that PLEX is a good choice for the eShop at a price tag of $4.99 across ALL platforms that utilize the eShop including 3DS/DSI/2DS and Wii U. I promise you your efforts would be better spent that way!
It plays every single file format that there is and streams 1080p HD locally and over the internet. You can even share you server with other people?!?!?!?! It is also already in collaboration with TheTVDB, Freebase, IMDB and others!