There is a way to make this work exactly how you were hoping and it's possible right now for as many audio tracks/channels that you want to pass through, try these steps and see if it works:
1) Say you need a 10 video, 4 audio channel multicam edit. Create a new sequence with 10 video tracks and 4 audio tracks and place the video and audio files on the appropriate track in sync with each other.
2) The crucial part here is that all audio files should be interpreted as mono (Project Panel > Modify > Audio Channels). You want each channel to be on its own track (i.e. stereo file should take two audio tracks in the sequence, not a combined stereo file on a single audio track)
3) Now you have 10 video tracks and 4 mono audio tracks in a sequence (we will call this the "Multicam Source Sequence").
4) Find this "Multicam Source Sequence" in the Project Panel. Interpret the audio settings of the sequence (Project Panel > Modify > Audio Channels) to be Mono - 4 clips. One for each audio track in the sequence.
5) Create another sequence (we'll call this the "Main Timeline")
6) Place the Multicam Source Sequence into this Main Timeline. Notice that it has one video track, but 4 audio tracks! This is because we interpreted the sequence to have four channels back in Step 4.
7) Right click on this clip we just placed in the timeline, Multi-camera > Enable. Now you have full multicam control for the video, but the audio is not set up yet.
8) Right click again on the clip and choose Audio Channels and check the farthest left box for each track (box #1). This routes audio channel #1 of each audio track from inside the Multicam Source Sequence out to this track. Since we made sure the tracks inside the Multicam Source Sequence are all mono, there are no other channels we need to pass through to the outside, which is why we check box #1 for all tracks. (Side note: If we had instead left the clips stereo on a single track inside the Multicam Source Sequence, we could use these boxes to control which channel (left/right) gets passed through to which track on the outside, but this way is much simpler).
9) Now we have four audio tracks receiving the first channel from inside the Multicam Source Sequence. But they are currently all identical because they're all set to Multi-Camera Angle 1. The way you control which audio channel you need is the same as how you control the video - by changing Multi-Camera Angles.
10) But our video clip is still linked so we can't edit each audio angle individually. To fix this, right click and Unlink the clip so we can edit each audio track separately.
11) Now right click on each audio clip and choose Multi-Camera > Angle 1 for the first track, Angle 2 for the second track, etc.
12) You should now see the waveforms appearing as they are passed through to the outside to their respective tracks.
13) Now you have full video multicam control with linked audio that passes through as many tracks as you need! And you can match frame the video to get the timecode of the audio for use back in the Multicam Source Sequence. Note that if you accidentally delete one channel, it's trivial to get it back, simply duplicate another track's audio and change the Multi-Camera to the missing Angle! Also you can route these Multicam audio Angles in the Audio Track mixer for exporting splits, etc. Very powerful workflow once you get the hang of it.
Note: One thing to avoid - if you have multiple multicam syncmaps you need to make into "Main Timelines" you might be tempted to go through the steps for one of them and then duplicate those sequences, clear out the contents, and paste the other syncmap in there. DON'T DO THAT. It won't work, trust me. Just start this list of steps again from the top for each multicam sync you need.
AdChoices