A music data distribution system for distributing music data to an external device
connected to a network, comprises: a storage device that stores first music data;
a receiver that receives a music data distribution request from the external device
connected to the network, the music data distribution request comprising at least
music data identification information and music data quality information; a reading
device that reads the first music data from said storage device in accordance with
the music data identification information; a quality converter that converts the
first music data into second music data having a quality different from the first
music data in accordance with the music data quality information; and a transmitter
that transmits the first or the second music data to the external device in accordance
with contents of the music data distribution request.
