Cadence-based playlists management system

1. A media playback device comprising:

a content output device configured to output media content;

a cadence acquiring device;

a processing device configured to control operation of the media playback device; and

a memory device storing software instructions that, when executed by the processing device, cause the media playback device to:

acquire, using the cadence acquiring device, a cadence of a user associated with a repetitive motion activity;

send a request to a media delivery system, the request associated with the cadence and configured to cause the media delivery system to select one of a plurality of pre-generated cadence-based playlists, the plurality of pre-generated cadence-based playlists being created for a predetermined range of cadence values and stored in the media delivery system, each of the plurality of pre-generated cadence-based playlists being associated with a subset of the predetermined range of cadence values and identifying media content items having one or more tempos corresponding to the subset of the predetermined range of cadence values;

receive, from the media delivery system, data usable to initiate playback of media content items identified by the selected one of the plurality of pre-generated cadence-based playlists; and

play, using the content output device, the media content items identified by the selected one of the plurality of pre-generated cadence-based playlists.

2. The media playback device of claim 1 , wherein the software instructions further cause the media playback device to:

acquire, using the cadence acquiring device, a second cadence associated with the repetitive motion activity, the second cadence being different from the cadence;

send a second request to the media delivery system, the second request associated with the second cadence and configured to cause the media delivery system to select another one of the plurality of pre-generated cadence-based playlists;

receive, from the media delivery system, second data usable to initiate playback of media content items identified by the another one of the plurality of pre-generated cadence-based playlists; and

play, using the content output device, the media content items identified by the another one of the plurality of pre-generated cadence-based playlists.

3. The media playback device of claim 2 , wherein the software instructions further cause the media playback device to:

stop the playback of the media content items identified by the selected one of the plurality of pre-generated cadence-based playlists.

4. The media playback device of claim 2 , wherein a difference between the cadence and the second cadence is greater than a threshold.

5. The media playback device of claim 4 , wherein the software instructions further cause the media playback device to:

determine that a difference between the cadence and the second cadence is not greater than the threshold; and

continue to play the media content items identified by the selected one of the plurality of pre-generated cadence-based playlists.

6. The media playback device of claim 1 , wherein the software instructions further cause the media playback device to:

determine that the cadence is below a predetermined level; and

stop playback of the media content items identified by the selected one of the plurality of pre-generated cadence-based playlists.

7. The media playback device of claim 1 , wherein the software instructions further cause the media playback device to:

receive a user selection of a tempo; and

play media content items identified by one of the plurality of pre-generated cadence-based playlists associated with the tempo regardless of change in the cadence.

8. The media playback device of claim 1 , wherein the user's cadence is acquired by receiving a user selection of a tempo.

9. The media playback device of claim 1 , wherein the software instructions further cause the media playback device to:

determine a tempo corresponding to the user's cadence,

wherein one of the plurality of pre-generated cadence-based playlists is selected based on the tempo.

10. The media playback device of claim 1 , wherein the software instructions further cause the media playback device to:

receive a user selection of playlist characteristics,

wherein one of the plurality of pre-generated cadence-based playlists is selected based at least partly on the user selection of playlist characteristics.

11. The media playback device of claim 10 , wherein the playlist characteristics include at least on of genre, theme, and era of a playlists.

12. A method for playing media content items, the method comprising:

acquiring, using a media playback device, a cadence of a user associated with a repetitive motion activity;

sending a request to a media delivery system, the request associated with the cadence and configured to cause the media delivery system to select one of a plurality of pre-generated cadence-based playlists, the plurality of pre-generated cadence-based playlists being created for a predetermined range of cadence values and stored in the media delivery system, each of the plurality of pre-generated cadence-based playlists being associated with a subset of the predetermined range of cadence values and identifying media content items having one or more tempos corresponding to the subset of the predetermined range of cadence values;

receiving, from the media delivery system, data usable to initiate playback of media content items identified by the selected one of the plurality of pre-generated cadence-based playlists; and

playing, using the media playback device, the media content items identified by the selected one of the plurality of pre-generated cadence-based playlists.

13. The method of claim 12 , further comprising:

acquiring, using the media playback device, a second cadence associated with the repetitive motion activity, the second cadence being different from the cadence;

sending a second request to the media delivery system, the second request associated with the second cadence and configured to cause the media delivery system to select another one of the plurality of pre-generated cadence-based playlists;

receiving, from the media delivery system, second data usable to initiate playback of media content items identified by the another one of the plurality of pre-generated cadence-based playlists; and

playing, using the media playback device, the media content items identified by the another one of the plurality of pre-generated cadence-based playlists.

14. The method of claim 13 , further comprising:

stopping the playback of the media content items identified by the selected one of the plurality of pre-generated cadence-based playlists.

15. The method of claim 13 , wherein a difference between the cadence and the second cadence is greater than a threshold.

16. The method of claim 12 , further comprising:

determining that a difference between the cadence and the second cadence is not greater than the threshold; and

continuing to play the media content items identified by the selected one of the plurality of pre-generated cadence-based playlists.

17. The method of claim 12 , further comprising:

determining that the cadence is below a predetermined level; and

stopping playback of the media content items identified by the selected one of the plurality of pre-generated cadence-based playlists.

18. The method of claim 12 , further comprising:

receiving a user selection of a tempo; and

playing media content items identified by one of the plurality of pre-generated cadence-based playlists associated with the tempo regardless of change in the cadence.

19. The method of claim 18 , further comprising:

receiving a user selection of playlist characteristics,

wherein one of the plurality of pre-generated cadence-based playlists is selected based at least partly on the user selection of playlist characteristics.

20. The method of claim 19 , wherein the playlist characteristics include at least on of genre, theme, and era of a playlists.