For MediaStream rules, they're based on information you can see at the bottom of the web app for an individual movie item. For example, if you wanted to see a Commentary Icon for you movies with commentary tracks and you have your audio tracks titled like below, you can make a MediaStream rule with two properties like so: Type: 'Audio' Title: 'commentary'   When Iconic checks this rule, it will look at each MediaStream below to see that the Type property *contains* 'audi