I own Mz-Nh600D with a 1Gig hi-MD disk I have used SonicStage and SimpleBurner to load CDs. I have loaded 40 CDs successfully. They show the Album title, Artist, and track name succussfully. When I transfer #41 (and it does show good Album/Artist info) to disk, after Simpleburner rewrites the directory they info comes up UNKNOWN. The tracks are there, they play fine but no info came over. I tried two different CD, thinking the first one had problem getting info from the net, but they both showed good Artist info. When Loading #41 it was indicated that I had 200+ minutes remaining on the hi-MD.