Yes, you must click the 'Start' button in the CUE platform before playing the Light Show audio for the phones to sync properly. If you play the WAV file without first clicking Start, the song will play through your venue's speakers, but the phones will not sync or flash. Best practice is to set everything up in advance — click Start to put the Light Show in 'live' mode, then when you're ready, simply play the exported WAV file through your sound system. This allows you to coordinate with other production elements like hype videos and lighting cues.
