23 feb 94    pre beta
                first limited release of Layer 3 Shareware for PCs
25 feb 94    ver 0.99 (beta)
                first release of beta version                
16 mar 94    ver 0.99a (beta)                
                bug fix: distortions in mono mode fixed.
25 apr 94    ver 0.99b (beta)
                changes to documentation
03 jun 94    ver 0.99c (beta)
                bug fix: switching from long blocks to short blocks fixed
                new decoder option: write 24 bit ascii hex output
13 jul 94    ver 1.00
                improved file handling for encoder
                       - true mono files
                       - .WAV files
                encoder now twice as fast
                new registration mechanism
                additional decoder option
                       - ign: ignore errors in bit stream (do not stop 
                              decoding process)
                       - ff: accept free format in bit stream
22 feb 95    ver 1.50
             decoder version 2.00
                aiff support
                snd support
                more bitrates
		MPEG 2 Layer 3 low sampling frequencies
                support for Layer 2
                support for Layer 1
                support of ancillary data