Abstract: A system and method include presentation of a plurality of virtual objects to a first user, reception, from the first user, of a command to associate a voice annotation with one of the plurality of virtual objects, reception of audio signals of a first voice annotation from the first user, and storage the received audio signals in association with metadata indicating the first user and the one of the plurality of virtual objects.

Abstract: A system and method include presentation of a plurality of virtual objects to a first user, reception, from the first user, of a command to associate a voice annotation with one of the plurality of virtual objects, reception of audio signals of a first voice annotation from the first user, and storage the received audio signals in association with metadata indicating the first user and the one of the plurality of virtual objects.

Abstract: A system to identify and leverage geographically proximate client devices to reduce network traffic associated with facilitating digital collaboration sessions in a real-world environment. Embodiments enable a user to initiate a digital collaboration session and to limit participation in the digital collaboration session to client devices that are physically located within a geofence (e.g., a virtual geographic boundary). Other client devices that are located within the geofence are identified and enabled to join the digital collaboration session. participants may each use their own client device to contribute to the digital collaboration session. Participants can save individual segments of the digital collaboration session by indicating an interest immediately after the segments occur. Client devices then upload data for the segment for enhancement.

Abstract: A system to identify and leverage geographically proximate client devices to reduce network traffic associated with facilitating digital collaboration sessions in a real-world environment. Embodiments enable a user to initiate a digital collaboration session and to limit participation in the digital collaboration session to client devices that are physically located within a geofence (e.g., a virtual geographic boundary). Other client devices that are located within the geofence are identified and enabled to join the digital collaboration session. participants may each use their own client device to contribute to the digital collaboration session. Participants can save individual segments of the digital collaboration session by indicating an interest immediately after the segments occur. Client devices then upload data for the segment for enhancement.

Abstract: A system to identify and leverage geographically proximate client devices to reduce network traffic associated with facilitating digital collaboration sessions in a real-world environment. Embodiments enable a user to initiate a digital collaboration session and to limit participation in the digital collaboration session to client devices that are physically located within a geofence (e.g., a virtual geographic boundary). Other client devices that are located within the geofence are identified and enabled to join the digital collaboration session. participants may each use their own client device to contribute to the digital collaboration session. Participants can save individual segments of the digital collaboration session by indicating an interest immediately after the segments occur. Client devices then upload data for the segment for enhancement.

Abstract: A playlist engine is provided that selects content items for a partial playlist. The content items may include audio content items (i.e., tracks or songs). In one implementation, a user provides a request to expand a partial playlist. The request may include the partial playlist and an indication of the number of additional content items that the user would like to add to the partial playlist. The playlist engine may select one or more attributes from the content items in the partial playlist, and may use the selected one or more attributes to determine additional content items that are relevant to the selected one or more attributes. The playlist engine may add the additional content items to the partial playlist.