Please find attached gst-plugins-monkeysaudio-0.8.0.ebuild. Upon writing this ebuild, I borrowed heavily from gst-plugins-ffmpeg-0.8.1.ebuild.
Monkey's Audio is "a fast and powerful lossless audio compressor". Now, rhythmbox can play *.ape files. :)
This ebuild should go inside media-plugins/ , along with other gst-plugins.
Steps to Reproduce:
Created attachment 37269 [details]
gst-plugins-monkeysaudio-0.8.0.ebuild (New Package)
license issues, but upstream is unresponsive, for reference:
*** Bug 78324 has been marked as a duplicate of this bug. ***