If you need to get a converter to run Ogg Theora, you can here. For the Mac OSX here.

And here it is, along with LGPLv3. And here's a PDF that explains the changes made since the last draft was published. There is also a handy compatibility chart in the GPLv3 FAQ:

How is GPLv3 compatible with other GNU licenses?

The various GNU licenses enjoy broad compatibility between each other. The only time you may not be able to combine code under two of these licenses is when you want to use code that's only under an older version of a license with code that's under a newer version. permitted.

Just follow the chart. Here's a good summing up by Mattlew Aslett. And here's a snip from Stephen Shankland's coverage:

Among those giving the new license a warm reception are IBM, dominant Linux sellers Red Hat and Novell, and open-source database seller MySQL.

"GPL 3 code will be flowing from IBM...We'll tell our customers we're fine with it," said Dan Frye, vice president of IBM open systems development. "As with any consensus process, you don't get everything you asked for. But we got listened to. What came out is absolutely a commercially viable license."

If you can read French, you can read about a case in France, where the GPL was recently upheld.
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