In my script I use Amarok.Lyrics.showLyricsHtml(html) and Amarok shows the lyrics and stored in the db. Fine.

But, in certain circunstances, I need to update this data and Amarok don't update the lyrics calling Amarok.Lyrics.showLyricsHtml() .

Manually erased lyrics don't works and seems that erase lyrics is not really erasing all.

What must I do to erase lyrics from my script?

On the other side in setLyricsForTrack( String trackUrl , String lyrics ) how can obtain trackUrl value.

Update: I found that calling Amarok.Lyrics.showLyrics() and next calling Amarok.Lyrics.showLyricsHtml() lyrics are updated but seems like a bug more than a feature.

Update: Reading amarok sources I found that Amarok.Engine.currentTrack().lyrics = '' do the job. Well, it's logical but isn't obvious if you are working in Amarok.Lyrics.