This is the first run of the instructions, suitable for the truly hardcore only.

Firstly, you will need a ladspa plugin, compiled as arm eabi. The plugin will need one audio output and no audio inputs.

Then, you will need to write an activity which recieves the intent "com.glastonbridge.ladspa.GET" and adds the key "com.blah.blah.pluginname" and the byte array containing the lib, into the extras bundle. Do not delete the existing extras, other plugins may be present. Also, add in an xml file descriptor against the key "com.blah.blah.pluginname." More documentation will be available later (whenever someone shows an interest, basically), but for now you can take a look at the open-source analogue synth which I pulled from the LADSPA CMT (also available on the Android Market). It is here