I think the basic JetAudio is fully functional. The (pay for) pro version includes mp3 encoding and some other sound enhancement features, but the basic player seems fine. I've not tried it for DVD until today, but it seems to have more or less the same features as my DVD player - it zooms, subtitles and changes angles (I haven't checked to see if it has vari-speed). I think other people on Mudcat have used it for audio and may have more experience with it for video too.

Mick