Systems and methods for automatic mixing of media

A computer system, comprising:

• one or more processors;
• and
• memory storing one or more programs configured to be executed by the one or more processors, the one or more programs including instructions for:
• receiving, via one or more networks, audio mix information for a first audio item from client devices for a plurality of users, wherein the audio mix information includes user-selected values for one or more playback parameters that were used by the plurality of users to generate transitions for the first audio item, wherein the transitions included overlap between the first audio item and other audio items, and wherein the user-selected values for the one or more playback parameters were specified by user inputs from the plurality of users;
• determining a first mix rule using the user-selected values for the one or more playback parameters received from the client devices for the plurality of users, the first mix rule relating to determining overlap of the first audio item with audio items in respective transitions;
• and
• making the first mix rule available via one or more networks to a plurality of client devices;
• applying the first mix rule to generate transitions between the first audio item and other audio items for the plurality of client devices;
• and
• transmitting the transitions generated by applying the first mix rule to respective client devices of the plurality of client devices to enable the respective client devices to play the transitions generated by applying the first mix rule.