Page 1 of acoustic solutions 451

I bought the Acoustic Solutions 451 from Richer Sounds recently, and was told it would no longer play vcd`s. I have tried various cd`s of mine and it seems to find most .jpg files and display these (as a slide show) but won`t find any .mpg files. Switching the code 5000 or 5001 doesn`t seem to do anything. Do I need a different form of file for a vcd or should most .mpg files play (if the machine is able). Has anyone found a further hack for this?