Another neat trick I've found with Zara is that you can insert a folder of items as a 'random track', by merely right clicking on the desired folder in the file tree and select 'Insert As Random Track'.
So, for instance, you could create a folder called 'Station IDs - 10 seconds' and drop several 10 second IDs in that folder. Zara will play one at random when the folder comes up in the playlist. Sort of like a cart with multiple cuts on it. .
We run playlists as hour long events 24/7, 168 playlists in a rotating fashion each week. Lists are associated with hourly events (for example, the playlist for THURSDAY1500 will play at 3pm on Thursday, THURSDAY1600 plays at 4pm on Thursday and so on). Some playlists have content, some are merely 'placeholders' with no audio in them (this is for live shows). If we have a programmer that will be unable to be live during their show, we can drop an archived program in the correct day and hour playlist and Zara will play it.
I've been trying to find an excuse to switch another system that is a bit more feature rich with music, namely Rivendell or MixTime - DirEttore. Zara keeps trucking along, which is why we are still sticking with it for now.
Thanks,
-mattthepm
Radio Free Nashville