You didn't need the samples on the older Kiss table because that table was VP only, not vpm (didn't use any roms). This one uses the ROM from the original table (the bootleg version with 7 digits), and the vpm emulation of those older Ballys requires the samples.
JP
PS: The Elvis table still is not ready to be used in vpinmame, we need to wait three years after the release of a real table before it can be emulated, just a courtesy to Stern (or any other manufacter). I think there was some other author working on Elvis, at least I read something about the table in teh vpforums.