You need to convert Windows Media files to use them on a Mac. You can use HandBrake for this task.
To prepare your footage, follow these steps:
1. Open Toast. Toast is the icon on your dock that looks like a purple toaster with media in it.
2. Click on the tab labeled "Convert" in Toast’s main window.
3. Do either of the following:
4. Click the red button labeled "Burn" in the bottom right corner of Toast's main window.
Now you must choose what format Toast should convert your media to.