cheers, ISO mode worked a treat. On reflection it makes sense too...doh...hence why real dvds vob files are split in 1gb chunks because of the so called problem of reading above that. Thanks ever so much, owe you one now. I'm still in 2 minds whether I should look at upgrading it to the twice as expensive Kiss player, thinking that seems to be much more powerful, (this player uses the Medion GE chipset so it seems from what I've read) so can be some potential playback problems.... My main problem was with the fact that all long films would stop playing so far through, but now thats sorted...I still have the occasional problem of an avi going out of sync once in a while seemingly with VBR audio for a few seconds, where a quick rewind fixes that - however, thats a minor niggle, hopefully fixed in future...does that problem exist in the Kiss player? cheers again Tuck