How to convert .i3e files???

My newsroom recently purchased a Canon Vixia HF10...I wish I knew about the difficulty with editing the video files before I bought it. So the Pixela ImageMixer 3SE software the camera comes with saves the files as .i3e or .m2ts. Ok, but now what? I need to supply a clip to a tv station because my paper does a 30-minute news show. The person at the radio station can't open, save or do anything with this file. My Windows Movie Maker doesn't even recognize the files. How do I convert a i3e or m2ts file to something people can open and actually use??????