I have dabbed Absolution before, but didn't give it a serious try. Maybe I should sit down and try it again.
On www.doomworld.com forum Kaiser posted his own PC port of Doom64, which is called "Doom64 EX" and is different from Absolution and requires a N64 rom of Doom64. Maybe you haven't tried it, as I didn't see it posted on your website.
Kaiser's post is here:
http://www.doomworld.com/vb/wads-m...