I don't think so. As for what I have read, the only DVD with data that most (or all) Panasonic standalones are able to read are those encoded with JPEG files, and only when the discs are recorded on another Panasonic device (or the same Panasonic, of course).
Still, it has been reported that some Kiss DVD players from Denmark can read DVD data with WAV files.
I shall keep researching...
Carlos Albert L.
discomakberto (at) megamixers (dot) co (dot) uk