Systems and methods for coordinated playback of analog and digital media content

1. A playback device comprising:

an analog audio source component;

a network interface;

one or more processors; and

data storage having instructions therein that, when executed by the one or more processors,

cause the playback device to perform operations comprising:

causing playback of first audio based on analog audio signals generated by the analog audio source component;

based on an indication that analog audio signals are no longer being generated, requesting, via the network interface, audio content from one or more remote computing devices, wherein the requesting comprises identifying related content based on the first audio;

receiving, via the network interface, second audio content; and

causing playback of second audio based on the second audio content.

2. The playback device of claim 1 , wherein the indication that analog audio signals are no longer detected is based on a signal-to-noise ratio.

3. The playback device of claim 1 , wherein the indication that analog audio signals are no longer detected is based on embedded audio marker in the analog audio signals.

4. The playback device of claim 1 , wherein the indication that analog audio signals are no longer detected is based on physical position of elements of the analog audio component (e.g., tonearm angle).

5. The playback device of claim 1 , wherein the operations further comprise:

after beginning playback the second audio, receiving an indication of second analog audio signals generated by the analog audio source component;

ceasing playback of the second audio; and

after ceasing playback of the second audio, causing playback of third audio based on the second analog audio signals generated by the analog audio source component.

6. The playback device of claim 1 , further comprising:

one or more audio transducers; and

one or more amplifiers configured to drive the one or more audio transducers,

wherein causing playback of the first audio comprises outputting the first audio via the one or more amplifiers and the one or more audio transducers.

7. The playback device of claim 1 , wherein the playback device is a first playback device, and wherein causing playback of the first audio comprises transmitting, via the network interface, the first audio to a second playback device.

8. The playback device of claim 1 , wherein the operations further comprise obtaining an automatic content recognition (ACR) determination based on the first audio.

9. The playback device of claim 8 , wherein the operations further comprise obtaining metadata based on the ACR determination.

10. The playback device of claim 9 , wherein the operations further comprise causing the metadata to be displayed via a controller device.

11. The playback device of claim 8 , wherein the obtaining the ACR determination comprises receiving the ACR determination from one or more remote computing devices.

12. The playback device of claim 1 , wherein the operations further comprise:

obtaining data based on analog audio signals generated by the analog audio source component;

transmitting, via the network interface, a request for audio content associated with the data from one or more remote computing devices;

receiving, via the network interface, third audio content for playback; and

causing playback of third audio based on the third audio content.

13. The playback device of claim 12 , wherein the data comprises an identifier associated with a playlist stored via one or more remote computing devices.

14. A method performed by a playback device, the method comprising:

causing playback of first audio based on analog audio signals generated by an analog audio source component of the playback device;

based on an indication that analog audio signals are no longer being generated, requesting, via a network interface of the playback device, audio content from one or more remote computing devices, wherein the requesting comprises identifying related content based on the first audio;

receiving, via the network interface, second audio content; and

causing playback of second audio based on the second audio content.

15. The method of claim 14 , wherein the indication that analog audio signals are no longer detected is based on a signal-to-noise ratio.

16. The method of claim 14 , wherein the indication that analog audio signals are no longer detected is based on embedded audio marker in the analog audio signals.

17. The method of claim 14 , wherein the indication that analog audio signals are no longer detected is based on physical position of elements of the analog audio source component.

18. A tangible, non-transitory, computer-readable medium storing instructions that, when executed by one or more processors of a playback device, cause the playback device to perform operations comprising:

causing playback of first audio based on analog audio signals generated by an analog audio source component of the playback device;

based on an indication that analog audio signals are no longer being generated, requesting, via a network interface of the playback device, audio content from one or more remote computing devices, wherein the requesting comprises identifying related content based on the first audio;

receiving, via the network interface, second audio content; and

causing playback of second audio based on the second audio content.

19. The computer-readable medium of claim 18 , wherein the indication that analog audio signals are no longer detected is based on a signal-to-noise ratio.

20. The computer-readable medium of claim 18 , wherein the indication that analog audio signals are no longer detected is based on embedded audio marker in the analog audio signals.