Hi all
If I understand correctly, you want to see RadioBOSS count down to the beginning of the vocal of the song (so you know when to stop talking)?
I use the Track Tool, to manually set the intro point. Then when the song is started, I can see the red intro line counting down to the start of the singing (or in the latest version, an extra green line at the very top of the screen).
So: Right click on a song, choose Track Tool, and then play the song - and hit the intro button at the point the vocal starts.
Forgive me if I mis-understood your question. All the best.
James