Thank you both for your replies. On eBay it is called MP4 Player
It supports many addio formats, including MP3 and WAV and it has a LCD screen that will show JPG photos. Also will display TTXT files.
It has a small cartoon called 'DEMO.AMV which is a nice animated cartoon that plays with a soundtrack.
I tried drag and drop a MP4 and even a AVI fil into the thing, My PC shows the files are there,plus the memory indicator on the things shows I did use some of the 2GB flesh space.
Neither AVI not MP4 show up in the movie menu. The file does not have a file manager. Bit I did drop in a very large AMV file and it plays alright. Not great, just alright. I think I did a bad edit on the file. I don't know the exact pixel size.
Converting my AVIs to AMV is a pain. I was hoping MP3 work work.