Adjust code in simple Mac Video Player

We have already had custom built a very simple mac application (Xcode) that sits in a folder along with an image file (JPEG or similar) and a .mov video file. Upon launch of the application it loads full-screen and shows the JPEG. When the play button on a presenter remote is pressed it then plays the video in that folder. At the end it goes back to the image screen. It also has some preset controls for a specific presenter remote. The application was produced several years ago and due to recent Mac OS upgrades, no longer works correctly. We require someone who can take the application and change it to work with OSX Lion or above and re-programme the preset controls to work with our latest presenter remotes (SP400 Smart-Pointer).