Create a "Block Party!" playlist containing random Artists and a specific number of their randomly selected songs arranged in a row ("two-fers"three-fers", and so on), one block of tracks per artist without artist repeats. You can restrict the size of the "Block Party!" playlist by Number of Artists or Duration in hours. Additionally, you can choose to use a particular Playlist as the source of tracks and restrict various Genres.
For iTunes 11 and later, OS X 10.8 or later.
Main window and settings.
(via in-app purchase)
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