About a year since I worked on Droidsound, but since I was back developing Android on another project I decided to clean up the droidsound source.
You can get it from
svn://swimmer.se/android/droidsound/
And it should compile directly with the Android SDK and NDK
(ie Import in Eclipse, run "ndk-build" from the project directory and just build & run)
Build on it or just steal the plugins and use your own GUI-player. If I continue on it I will likely rewrite most of the java code.
-- Sasq