Sweeper over nonstop mix

[Soulmaster]

once a day we are playing a 59 minutes mix, but we don't want that listeners are recording this mix so is it possible to overlay a jingle of sweeper evere x minutes.

[radio42]

You can schedule an overlay at that time (see Overlay Scheduker) and deactivate the "Suspend Program" open and also do not activate the "Pause" option.
That way the overlay just plays as an overlay over your program. You can define multiple overlays during that 59min. program.