The emerge fails for me during the configure saying it needs gtkhtml-sharp-3.14. This version of gtkhtml-sharp is not available for gentoo.
+ 25 Jan 2009; Peter Alfredsen <loki_val@gentoo.org> + banshee-lyrics-0.6.ebuild: + Tightened deps for bug 256277 + You need >=gtkhtml-sharp-2.24.0. I've changed the ebuild to reflect that.