Okay, I've realized that I have lots of favorite 3-5 rated songs that are just not getting enough play. So here's how I'm making sure they're getting some play for now on:
Match the following conditions:
Play count is less than 2
My rating is greater than 2
Limit to 25 minutes selected by random
I use the time limit because I typically listen a set of songs for about an hour while I work. If I limit to 25 songs, I might not make it through the list. My goal is to get beyond listening to the same old favorite songs all the time. With the live update, I'm constantly getting new songs that don't get enough play.