Synchronysation

[technick]

The easiest way is probably to embed the audio with the video and play it all back from the Catalyst?

Other wise you could use time code...

[kiwi]

What do you need to do? Does the audio need to be in frame sync with the audio (is it talking head stuff where lip sync is important)?

What audio software are you using on the pc?

If the audio software can output MTC or SMPTE then a catalyst layer could chase that time code.

Otherwise if the audio doesn't need to be absolutely in sync then you could fire them both at the same time, perhaps by midi or some other means.

What is the reason for wanting to play audio back separately?