problems with playing movies on bitlord?

[dmj]

I have been using Bitlord 1.1 for 3 years with no problems, however the other day I was playing around and changed some settings I think? to give you an example: I click on a film that I've already downloaded ages ago and watched, when I click on it though it goes back to 0%? the gold icon with a blue arrow in it ( sorry I know I sound lame!) Has now got a page round it with turned over corner? When I click it says " Cannot play this media file as the file is either corrupt or the application does not support the format you are trying to play" I know the files arent corrupt because I've already watched them? Does anyone know how to get it back to original settings? Also on some movies I try to open directory and it wont open? Help please, cheers :) :) xxxxx

p.s I think I may have accidentally compressed the files? How do I sort that one out? :)