Best way to do something

Hello,
I have a live show that will be airing live for 6 hours one time only. Each hour at :59:00 to top of hour they will break and play music to allow stations to ID. During this 1 minute window I will need to identify the radio station over the music. I plan to use instant player audio files so it can make announcement over their live music bed.

I plan to start a record in MB Recaster Pro so I can join a minute or so late if needed, but what is the best way to do a 6 hour straight live feed and do the hourly ID's.

What is the best way to schedule each hour 30 seconds into the music bed of feed the instant player files, say number 2, 3, 4, 5, etc.

Thank you for your advice!

Paul