Prevent WA from transfering folder.jpg's to pmp ?

[xpmule]

First off im liking that wa transfers my album art when i select "transfer to pmp"
but the art that gets sent over is way too small and looks bad

i have a folder.jpg in all album folders 800x800 for my Flac collection
and then im using embedded art with my mp3 collection added with tag/rename

if i transfer manualy my art shows perfect on my player
but if i click on send to.. player and then add a folder.jpg afterwards it gets ignored by the pmp and the art tranferrred by wa gets priority in the player

any suggestions for me ?
sadly im stuck transfering manualy or using winamp with bad cover art
even if i could stop winamp from sending too small jp'g i'd be happy..