Have you opened your manual at all? 🙂 Or have you done a search of this forum? There are hundreds of posts about this here. Short answer, yes you can mix them. From your question, it doesn’t sound like you’ve spent any time trying to understand FCP. The manuals are pretty complete, the indexes in the manuals are too. This forum is a great resource, but my opinion is that people should have the courtesy and respect to at least do a quick search before asking a question that’s right in the manual or found in a quick search. end of mini-rant 🙂
Ed