Methods and systems for overlaying and playback of audio data received from distinct sources

A media presentation system distinct from a remote server and distinct from a client device, comprising:

• one or more processors;
• and
• memory storing one or more programs for execution by the one or more processors, the one or more programs including instructions for:
• receiving, over a first communications channel, from the remote server via the network connection, a first data stream for a first media item;
• playing the first media item;
• and
• while playing the first media item:
• receiving, over a second communications channel distinct from the first communications channel, from an application at the client device distinct from the remote server and distinct from the media presentation system, a second data stream for audio data that includes vocals provided by a user as the first media item plays;
• measuring a latency of the second communications channel;
• overlaying, with the first media item, the vocals provided by the user as the first media item plays to generate a composite data stream, the overlaying comprising:
• offsetting the first data stream from the second data stream in accordance with the measured latency of the second communications channel;
• and
• combining the first and second data streams in accordance with the offset of the data streams;
• and
• playing the composite data stream, including the overlaid vocals provided by the user and the first media item.

A non-transitory computer-readable storage medium storing one or more programs for execution by one or more processors of a media presentation system having a network connection, wherein the media presentation system is distinct from a remote server and distinct from a client device, the one or more programs including instructions for:

• receiving, over a first communications channel, from the remote server via the network connection, a first data stream for a first media item;
• playing the first media item;
• and
• while playing the first media item:
• receiving, over a second communications channel distinct from the first communications channel, from an application at the client device distinct from the remote server and distinct from the media presentation system, a second data stream for audio data that includes vocals provided by a user as the first media item plays;
• measuring a latency of the second communications channel;
• overlaying, with the first media item, the vocals provided by the user as the first media item plays to generate a composite data stream, the overlaying comprising:
• offsetting the first data stream from the second data stream in accordance with the measured latency of the second communications channel;
• and
• combining the first and second data streams in accordance with the offset of the data streams;
• and
• playing the composite data stream, including the overlaid vocals provided by the user and the first media item.