These are LADSPA plugins, you also need at least one LADSPA host to make use of this software. A description of each plugin is included in the file PLUGINS, and a simple Makefile is included to build (but not yet install) all of the plugins. See http://www.ladspa.org/ and http://plugins.org.uk/ for more information about LADSPA (the Linux Audio Developer's Simple Plugin API) and for a much broader variety of plugins.