Ive been trying to install a codec to get xvid videos sound working but that doesnt seem to work but I noticed a confusing thing I thought someone could help with. The macintosh HD has various folders in it, like applications and library, but the user folder also has a library. By default do most programs want to go in the macintosh HD or the user name one ? And do they relate to each other or are they completely seperate? sorry if this is a stupid question! Its just sometimes programs say put in library folder but there are two and they dont seem to relate?