After searching for the answer here, noticed nobody really answered this question so for those who need:
To hide song title while broadcasting using ONLY VDJ/Virtual DJ is simple:
Open computer registry editor tool (Run > regedit (press enter))
then go to HKEY_CURRENT_USER\Software\VirtualDJ select string "BroadcastShowTitles" and double-click to edit value. Value should be "0" to hide, "1" to show.