A media player may stream media content, such as music, to other media players over a data network connection, for example, a WiFi/802.11 connection. An encounter object may be used to keep a record of each media object transmitted. The encounter object may include information about the transmission itself, such as a date and time when the media object was transmitted and the source and destination media players involved. The encounter object may also include metadata about the media object, such as genre, album, title, and artist, if the media object is a song. The DJ session may also support user interaction, such as sharing library listings, suggesting next plays (requests), and polls.