if( asset_picon->indexable )
vwindow->change_source(asset_picon->indexable);
else if( asset_picon->edl )
vwindow->change_source(asset_picon->edl);
if( asset_picon->indexable )
vwindow->change_source(asset_picon->indexable);
else if( asset_picon->edl )
vwindow->change_source(asset_picon->edl);