proper album art size and side border color

[propagandhi]

two things, first what are the best/proper dimensions for album art(for audiobooks if it matters) and second, is there a way to get the side borders around said album art to always be black? I've messed around with all different sizes of pics even adding my own black borders to take up the whole screen area but they always get re-sized and the dread white border is yet again present. just tonight i found if i left the genre blank in my editor (tag&rename) for a particular audiobook the border was black, but with a genre(any genre) the border was white. however, if there's no genre i cant use EQ or anything else on it. small but completely frustrating. thanks for the help, before i buy my next mp3 player i am so going to check with you all first!!!

[CrowdAds]