puae : PUAE tries to continue where E-UAE left off. ( https://github.com/GnoStiC/PUAE )
winetricks : Quick and dirty script to download and install various redistributable runtime libraries ( http://wiki.winehq.org/winetricks )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a espenaf
For Paludis use this rsync : rsync://gentoo.zugaina.org/espenaf-portage
If you have a problem : ycarus(-at-)zugaina.org