Yes, I still have this running program. I can upload over here for you. "bassa" has also provided the software, hope it work for you. If it doesn't, I would go and unpack old software bundle for you. I remember it came in 3.5' floppy disc. The software is somewhere in the oldies section. I have to search for it first.
I remember I even have the hard copy of the manual and the technical support telephone number was also provided, along with the schematic. I even called in 2007 on the number provided. Yes, you are correct this company doesn't exist anymore. There is now a LAUNDARY SERVICE on the telephone number provided in the AES51 manual.