final AudioTrail at = t.getAudioTrail();
final DecimatedWaveTrail dt = t.getDecimatedWaveTrail();
if( dt == null ) continue;
info = dt.getBestSubsample( new Span( viewSpan.start, viewSpan.stop + 1 ), w );
// fullChannels = at.getChannelNum(); // XXX dirty shit
dt.drawWaveform( info, this, g2 );
if( nullLinie ) {
g2.setPaint( pntNull );
g2.setStroke( strkNull );
for( int ch = 0; ch < fullChannels; ch++ ) {