You can create a dummy layer in Catalyst with a very low resolution file that has your audio. In that file, place a clip with your timecode. From the Lighting Desk, have it sync to that layer's timecode. Also, the other layers can be synced to the timecode of that layer. The video files that are associated can then be synced back to the audio.

Remember that video chases audio in a media server. Also remember that a media server plays at monitor refresh rate multiples which are not always exactly the same as standard video playback.

You can also if you like, create a cue list on your lighting desk which changes the inframe values of the timecode clip so that you can jump to specific times in the timecode.