11. A system for creating a playlist based on a search query, wherein the playlist comprises a plurality of audio microposts, the system comprising: a computer comprising one or more physical processors programmed with computer program instructions that, when executed by the one or more physical processors, program the computer to: obtain a search query comprising one or more hashtags and/or keywords; obtain a plurality of audio microposts that are associated with the one or more hashtags and/or keywords, wherein each individual audio micropost of the plurality of audio microposts is associated with a run time length that is less than a predetermined time limit; rank the plurality of audio microposts based on one or more ranking criteria; determine a playback order of the plurality of audio microposts based on the ranking; create a playlist comprising the plurality of audio microposts arranged based on the playback order; cause a playback of the playlist to occur in accordance with the playback order; receive a new audio input during the playback; generate a new audio micropost based on the new audio input; obtain an indication that the new audio input is associated with the one or more hashtags and/or keywords; associate the new audio micropost with the playlist based on the indication; automatically add the new audio micropost to the playlist based on the association; and receive authorization information from a user, the authorization information comprising an indication of whether one or more other users are authorized to generate audio microposts to the playlist.
14. The system of claim 11 , wherein the computer is further programmed to: determine whether a number of the plurality of audio microposts included in the playlist is greater than a predefined number; identify a set of highest ranked audio microposts from the plurality of audio microposts based on the predefined number, responsive to a determination that the number of the plurality of audio microposts is greater than the predefined number; and cause the set of highest ranked audio microposts to be played back.