thanks for the links guys.
but since i'm always hesitant to install stuff i don't know/understand (to some degree at least), can you tell me of some site where i can read up on what's a codec, why i need it? differences between various codecs?
also, as i gather there are lots of different codecs available on the net, and some are bad (harmful even?) what are reputable sites for downloading them? (OK i guess that last quesion is not necessary, i'll assume the links you gave me are to OK sites).
can i uninstall codecs?
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
M.C. Escher - Reptilien