Tarball location has changed, diff attached. Compiles and works fine on amd64.
Created attachment 212914 [details, diff] Diff to dxpc-3.9.1.ebuild
+ 09 Jan 2010; Patrick Lauer <patrick@gentoo.org> +dxpc-3.9.2.ebuild: + Bump, add ~amd64 keyword, fix src_uri #296774