That is precisely what I do on my player. When Tux is done waving, the word "empeg" is replaced by my name and my work telephone number, but Tux stays sitting there.

Simply create a custom logo based on one of these images and send it to the player with my logo editor program:

http://empeg.miniinfo.net/logo/232.bmp
http://empeg.miniinfo.net/logo/233.bmp