Just great of Dan, he was able to convert the whole EMU Virtuoso sound package into the Motif XF format, which didn't work properly with the Melas waveform editor.
It is actually SHOCKING what a dramatic upgrade the Emulator Virtuoso soundset represents for the Yamaha Motif XF/MoXF. A lot of the strings are really excellent, and the loops are not as short as one might expect, it's often several seconds before the loop starts.
It is also striking that, although the Proteus Virtuoso waveROM size was stated with 32 or 64 MB, in fact when it is converted into the Motif format, the size is OVER 500 MB! Is this another example how Yamaha and other manufacturers often blow up sample size to exaggerated, meaningless values? I guess so...