A system and method for providing personalized music playback over a network. Via a browser, a user computer may be connected to a server and the user may tune to one of a plurality of radio stations. The user may receive a playlist of songs in the musical style of the radio station selected by the user. The playlist includes a plurality of unique identifiers for each song that indicate a location on the Internet from which the song may be streamingly transmitted to a media player for playback on the user's computer. Additionally, each user may submit requests for songs which that user desires to be included on a future playlist. For each radio station, requests from a plurality of users are aggregated over a predetermined time period to determine which songs are most requested. A user request for a song may be time-delayed or satisfied in real-time.