I can't Import video&Audio file in photoshop cs6
And mytimeline is like Cs5
Are you sure you're using the public beta of Photoshop CS6?
That doesn't look like the timeline in the public beta version.
NO!~ is CS6 i'm very sure
I asked if you were sure that it was the public beta, and not some previous leaked version (that doesn't have all the features of the public beta).
Could you post the text from Help -> System Info ?