taixzo, I haven't also gotten to get it to work. I've got some weird errors on when pressing the microphone button. Nothing happens. Here is the log output: <snip>
tracker-sparql -q "SELECT ?title ?artist ?url WHERE { ?song a nmm:MusicPiece . ?song nie:title ?title . ?song nmm:performer ?aName . ?aName nmm:artistName ?artist . ?song nie:url ?url . }"