Hi George and Alikat,
I'm not a Technics expert but I suspect that the 902 and 804 have file formats that are closer to the KN6000 since it looks to me like the format change a little with the KN7000. Do KN6000 files load on the 902 and/or the 804?
I have also found that the program I currently have will allow my PR54 files to load into the KN7000 only if I record the song using EZ-record and I do not add information. Of 3 test songs the first loaded fine and the other 2 did not and in fact they will not reload into my 54 without an error once I convert them to KN7000. The only difference in these files was that after I recorded them I went back and added Right2 parts that play at the same time as Right1 part.
What I really need is the song files for a song that was recorded on say the 6000, then the files after it was loaded and saved on a KN7000, and the files for say the 804 so I can really compare Apples to Apples and determime how these files are different.
It's so great that I can load files for the KN6000/6500/7000/PR804 on mine but I'd like to share songs as well.
This would be such an easy task for Technics and infact I'd bet their programmers already have such a tool for their own use.
Best Wishes

Heather