What is the best way to get audio from iclone to unreal engine?

only way is direct import audio to UE

Good question. What I do is make sure my in and outs match for the audio, then I export that to a WAV. Then when I use livelink, I use the timecode method (there is a great on the unreal website on how to use that). This pretty much means the time and the take output are synced, and then I render them both in Davinci Resolve.