Version:           Amarok 1.4-SVN (oct 31,2007) (using KDE KDE 3.5.8)
Installed from:    Ubuntu Packages
OS:                Linux

Artists such as "Crosby, Stills, & Nash" weren't properly loading similar Artists.

I've fixed this locally by escaping "&", ",", and "?" in the artist name,
before it is added to the AS request URL.

there must be a QString routine to escape characters that are reserved for HTTP queries.

-=-=-=-=-=-=-=-= new code below . amarok/src/scrobbler.cpp line 69

void Scrobbler::similarArtists( const QString & artist )
{
    QString safeArtist = QDeepCopy<QString>( artist );
    if ( AmarokConfig::retrieveSimilarArtists() )
    {
//         Request looks like this:
//         http://ws.audioscrobbler.com/1.0/artist/Metallica/similar.xml

        m_similarArtistsBuffer = QByteArray();
        m_artist = artist;
        safeArtist.replace("?","%3F").replace("&","%26").replace(",","%2C");

        m_similarArtistsJob = KIO::get( "http://ws.audioscrobbler.com/1.0/artist/" + safeArtist + "/similar.xml", false, false );

        connect( m_similarArtistsJob, SIGNAL( result( KIO::Job* ) ),
                 this,                  SLOT( audioScrobblerSimilarArtistsResult( KIO::Job* ) ) );
        connect( m_similarArtistsJob, SIGNAL( data( KIO::Job*, const QByteArray& ) ),
                 this,                  SLOT( audioScrobblerSimilarArtistsData( KIO::Job*, const QByteArray& ) ) );
    }
}