not at all sure of ubuntu but i did it with debian and slack. kind of ubuntu allergy and also i am trying to make it work in my lfs i call my distro "deserted" why? because this is purely an education distro and nothing to do with name/fame. this is more or less a platform which i am trying to go forward with me learning more than i can learn myself from other distro. when i bake my cake i try to make sure its eatable, atleast.
Debian amd64: iceweasel with i386 plugins, outside a chroot
you may have some trouble with mplayer's 32 bit plugins running them native. i use it to convert the flash files i download as flv and converting them as DVD so i can watch in a dvd player.