Check out... Sample editor for Roland MC-909
and hear the results... on

RPS editor for Roland MC-909

Diploma thesis of Manuel Robledo about Java Sound (in german): here

Temporary jsASIO files (add ASIO support to JavaSound): here
These sources contain some fixes to the files found under the thesis link above, but are still untested.
A tested version will be uploaded to sourceforge soon (hopefully...)

Most of my time now goes into my work at insertEFFECT.