Maybe you can get some help via the Support button here:

http://www.goodmans.co.uk/productdetails.aspx?pid=GMP34G5&language=en-GB

From the look of it, it's a bog standard piece of SigmaTel chipped, Chinese made cr*p -- horrid to use and not always reliable.

I have several SigmaHell players and their best feature is that they're small enough to drop without noticing it and cheap enough that you don't care.