Audio Sync in 10.0.6

Unless I am missing something but it seems there is no way to access to the window option where you can choose from, Timecode, Marker and Use Audio to sync the Audio together.

Which I could drop to my next question how well does FCPX sync with R3D files from the camera and external recording?

Is that window not only there when you make a Multiclip, and not a Synchronized clip?

You could theoretically use a multiclip to make a synchronized clip, but maybe other people can tell you more about it.

Haven't tried the R3D sync yet.

Open the R3D file into the timeline and place the audio in the timeline. Sync clips only works with audio waveforms. Multicam would work for timecode, though it may complicate things down the road.

Well actually automatic sync does use Timecode.

Final Cut Pro compares waveforms from the camera audio and second audio source to sync sound automatically — down to the sample level. If camera audio is unavailable, Final Cut Pro uses timecode to match recorded audio with picture. In short, syncing by hand is a thing of the past.