Most touring companies have promotion/marketing/advertising agency's that deal with this sort of thing. Long before the tours get to any given location, they send out what is called "BRoll" - which is a tape of clips from the show. This is mainly used for special TV appearances within the market the show will play. Say a star appeares on a local morning talk show, they will show clips along with the interview to give examples of the show.
Also included on these tapes are TV Spots that have the commercials that you see only where you see specific city information (theatre, dates, times, etc) it's left blank and the TV station, etc can include their own voice overs and onscreen verbage (phone numbers, ticket master logo, etc).
Sometimes it's the Theatres job to distribute the tapes, and sometimes it's the promotion/ad agency's job to distribute the tapes - it all depends on what sort of a deal the show has worked out with each city.
This is probably more than you wanted to know and hopefully not too confusing. :)
Updated On: 2/24/06 at 05:53 PM