Management of media content playback

A method to be performed by a computing system, the method comprising:

• receiving, via a communications interface of the computing system, an instruction to play back a playlist of audio tracks from a first cloud service on one or more playback devices of a media playback system, wherein the playlist comprises uniform resource identifiers that identify respective sources of the audio tracks at one or more streaming audio service servers of the first cloud service;
• retrieving, from one or more servers of a second cloud service, preference data associated with the audio tracks in the playlist;
• while the one or more playback devices are playing back the playlist via one or more speakers and before each audio track of the playlist is played back, determining (i) that the retrieved preference data includes negative preferences corresponding to first audio tracks of the playlist and (ii) that the retrieved preference data excludes negative preferences corresponding second audio tracks of the playlist;
• causing, via the communications interface, the one or more playback devices to play back the playlist according to the retrieved preference data, wherein the causing the one or more playback devices to play back the playlist according to the retrieved preference data comprises:
• causing the one or more playback devices to advance playback over each first audio track to a next audio track within the playlist such that each first audio track is not removed from the playlist;
• and
• causing the one or more playback devices to play back the second audio tracks, wherein the one or more playback devices stream the second audio tracks of the playlist from the respective sources of the second audio tracks at the one or more streaming audio service servers of the first cloud service.

A tangible, non-transitory computer-readable medium comprising program instructions that are executable by at least one processor such that a computing device is configured to perform functions comprising:

• receiving, via a communications interface, an instruction to play back a playlist of audio tracks on one or more playback devices of a media playback system, wherein the playlist comprises uniform resource identifiers that identify respective sources of the audio tracks at one or more streaming audio service servers of a first cloud service;
• retrieving, from one or more servers of a second cloud service, preference data associated with the audio tracks in the playlist;
• while the one or more playback devices are playing back the playlist via one or more speakers and before each audio track of the playlist is played back, determining (i) that the retrieved preference data includes negative preferences corresponding to first audio tracks of the playlist and (ii) that the retrieved preference data excludes negative preferences corresponding second audio tracks of the playlist;
• causing, via the communications interface, the one or more playback devices to play back the playlist according to the retrieved preference data, wherein the causing the one or more playback devices to play back the playlist according to the retrieved preference data comprises:
• causing the one or more playback devices to advance playback over each first audio track to a next audio track within the playlist;
• and
• causing the one or more playback devices to play back the second audio tracks, wherein the one or more playback devices stream the second audio tracks of the playlist from the respective sources of the second audio tracks at the one or more streaming audio service servers of the first cloud service.