1. An optical disk for use in a compatible player for representing a plurality of signals which are to be played synchronized with each other, said signals being represented on the disk in the form of digital data, with each of said signals being represented by a bit stream designed to be processed during play of the optical disk at a rate which varies with the information content of the signal itself and with the bit rates for said plurality of signals being independent of each other, the digital data on the optical disk being organized in a series of data blocks with the data blocks containing variable numbers of bits of each bit stream, the bit streams being distributed among the data blocks such that bits of each bit stream, after being read from the disk and buffered by a compatible player, are at all times available as required for proper reconstruction of the respective represented signal.