this may be way after-the-fact, but in regard to sacd content on hi-md players, sony vaio computers with sound reality functionality and the latest version of sonicstage mastering studio let users output files to hi-md walkman players. one of the features of sonicstage mastering studio is its ability to convert regular pcm wav files to dsd files, apparently giving them the same sound as sacd, at least in theory. it is unclear whether actual dsd file export to hi-md is possible right now, but it does appear that sony is at least moving in that direction, albeit without any fanfare.