faudio : Accuracy-focused XAudio reimplementation for open platforms ( https://fna-xna.github.io/ )
virtualbox : Family of powerful x86 virtualization products for enterprise and home use ( https://www.virtualbox.org/ https://github.com/VirtualBox/virtualbox )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a stefan_overlay
For Paludis use this rsync : rsync://gentoo.zugaina.org/stefan_overlay-portage
If you have a problem : ycarus(-at-)zugaina.org