This plugin stores the current Title, Album Title, Artist, Playing Status and Is Playing in Macro Deck 2 variables. Then, you can use these variables in buttons, actions or states.
There is a config dialog where you can choose which informations you want in the variables, and which variables names. New variable names or activation will take effect immediately, but when you disable or rename variables, the old ones will stay in Macro Deck 2 with their last values, until you restart the App.
You can use the variables to display the current title, artist or album on a button for example. The IsPlaying information (boolean) can be used to display a different icon on the play/pause button regarding the current playing status.