A system and method are provided wherein a server based music creator is accessible by a client for the creation of composite audio files. The method and system receives, from a remote client computer via a network connection, a play sequence for playing audio segments, wherein a play sequence identifies one or more audio segments and associates at least one temporal location in a playback timeline with each audio segment. A composite audio file including each audio segment identified in the play sequence is generated, such that the composite audio file when played plays each audio segment identified by the play sequence at each audio segment's associated temporal location(s). The composite audio file is then transmitted to the client computer. In another non-limiting example, the play sequence includes one or more track sequences. In a further non-limiting example, a server computer coupled to a communications network transmits to the client computer, computer-executable instructions for generating and displaying a graphical user interlace. The graphical user interface allows a user to select audio segments accessible to the server computer but not directly available to the remote client computer from the server computer, to arrange the audio segments into a play sequence by identifying temporal locations within the play sequence at which the audio segments should be played, and to transmit the play sequence to the server computer.