You can create a playlist that Media Player maintains automatically based on the criteria you specify.
You normally create a playlist by clicking and dragging music files to the playlist. However, you can also create a playlist based on the properties that Media Player maintains for each file. These properties include Album Artist, Genre, Composer, and Rating, to name just a few. So, for example, you could create a playlist that includes every music file where the Genre property equals Folk.
You create a property-based playlist by specifying the playlist criteria, which consists of three factors: the property, the property value, and an operator that relates the two.
The most common operators are Is, Is Not, ...