You can set your Everest Cast Pro Stream Server to avoid replaying the same artist every "X" amount of tracks. To Prevent Same Artist Replay:
Step 1 :
Login in to Everest Cast Pro Broadcasters Panel using your User name and Password.
Step 2 :
From Main navigation section Click on "Settings" now Settings page load. From “Avoid same artist tracks” section select the desired option from dropdown list. And Finally click on “Save”.
NOTE: The higher you set the value, the better mix you'll have, however it's important to understand you must have enough tracks in your media and in the playlists for this to work well.
You can't set the system to not repeat the same artist every 10 tracks if you only have 9 tracks on your server.