Hi, The disc you are thinking of was made by EMC.and can convert midi songs to styles.I believe that the disc is no longer, but if you go to the EMC site the function to convert midi to style I think that if you look at the style converter it includes the midi function as well The sit you require is www.emc-musicsoftware.de they were responsible for a lot of the internal software of the Technic's ranges including KN ,PR and some of the organs. The price as of today is 199 euros
best of luck John.