Ddude003,
Thank you for responding! I just looked at Spotify, and it comes close. It’ll self-generate playlists for a number of different “categories,” more categories than the Sony. But unlike the Sony, which creates the playlist from the tracks on its hard drive (i.e., my music), Spotify creates the playlist from its own music resources. I’m hoping to come across a controller app that will do what the Sony does.
An interesting side note is the Sony comes preloaded with Spotify, the only app it can play other than internet radio. When users like me have wondered why the HAP machines haven’t been updated to play more apps (Tidal, Qobuz, et al), we get reminded that the HAP machines are not really streamers, they’re pumped up iPods.