dangerade

Years ago I had the Sony D-NE300 Psyc ATRAC Walkman Portable CD Player, I've since lost/broken it. I do however have a bunch of ATRAC CDs I made with audio files that exist only on those CDs and that I'd really like to recover. Does anyone know if there is a way to get those audio files off the CD and preferably convert them into a usable format? The CD looks like: HIFI [folder] > TRK000A.ATP > TRK000B.ATP etc. 0001000E.STK ALBUM.NDB ARTIST.NDB GROUP.NDB PLLIST.NDB TOC00000.STI TOC00001.STI TRACK.NDB What I've tried so far: I have Sonic Stage 3.4 installed The TRKxxx.ATP files appear to be the individual tracks, I've tried renaming them to .omg .oma .aa3 etc. and playing/ converting them, but that didn't work. The CD doesn't seem to be recognized as a music cd by SonicStage, and I can't figure out how to play or import the files with that. At this point I'm starting to wonder if it's even possible?