Developer a simple app for Mac OSX

This program is already working in Windows NET - C#. We need a Mac developer to code it for OSX. We have all of the C# source code which you can use as a template. The program displays one menu screen with 11 options. All of the options are essentially the same but they just use different multimedia files. Each option runs a video clip, a music clip and plays a .wav file on an analog sound device via a USB port. We provide all of these. The program checks for a valid license on our server database during installation. It also checks the server for updates. Attached is a sample video of the Windows version in operation. The complexity of the project has to do with running an .mp3 music file on speakers at the same time you run a .wav file on the Silverstone. It works but you might have to do some research to make that happen. You will need the Silverstone device there to program and test. I think you cannot do the project without it and Also, We have an old program that runs on OSX and it runs the silverstone with the music files. It will be a good example for you if you have trouble making them both work. The program is very similar to Ascension 11.