AIFF format

I'm having an odd problem with AIFF files exported from DoggieBox. Though they open and play fine in QT player, I can't seem to open them in Deck (via "Add sound to library"). I am able to access them in Deck if I first open and re-save the file in Amadeus II, even though I leave the format (44.1 Khz, 16 bit) the same. One difference I notice is that in Finder, the DB output's "Kind" is shown as "AIFC Audio", where Amadeus's is "Audio IFF Document". Do you know what the distinction is? -- Lee