To cue an audio item automatically :
- Click on the "In-Track" tab (or on the "In-Track" icon if you have configured the In-Track dialog box 
).
- Select an item from anywhere (Browser, cart, playlist...) and drag it to the In-Track tool.
- Click on "CUE" 
.
This function sets the mark-in (blue) 
where the modulation starts and set the mark out (yellow) 
where the modulation stops.
By default, below -50dB is defined as a blank so it is not considered as modulation.