Portable DVD player and mp3 files

All:
Is there a portable DVD player that you would recommend that does the
following? It not only plays mp3 audio files; but, it also allows the
fast forwarding and rewind of an mp3 audio track within the track. That
is, if I have to leave the room while playing an mp3 audio file from a
DVD, I can always rewind or fast forward it to get to the spot that I
missed.

Keith