do these have the dlna services that some of the other boxes have? i currently have apple tv but its kind of a pain streaming some stuff b/c you first have to convert it before you can play it over itunes through the apple tv. i'm assuming dlna just gives me full access to all files i choose on the computer? also, regarding cable someone said something about it improving the quality of cable channels possibly? i may have misunderstood, but that would be awesome considering we don't have HD cable. thank you.