I just wrote a small SWI-Prolog module for literal search using the ClioPatria SPARQL end-point. It uses the rdf_litidex module, and performs a metaphone search on existing literals in the database. All of that is triggered through a built-in RDF predicate.

Here is an example query you can perform on the Jamendo SPARQL end-point (make sure you select lit as the entailment - it will be the default one soon):

{"punk jazz" <http://purl.org/ontology/swi#soundslike> ?o}

This query binds ?o to all resources within the end-point that are associated with matching literals. For example, you would get back:

The module is available there.