connect(m_effectsList, SIGNAL(itemSelectionChanged()), this, SLOT(slotUpdateInfo()));
connect(m_effectsList, SIGNAL(doubleClicked(QListWidgetItem *, const QPoint &)), this, SLOT(slotEffectSelected()));
connect(m_effectsList, SIGNAL(itemSelectionChanged()), this, SLOT(slotUpdateInfo()));
connect(m_effectsList, SIGNAL(doubleClicked(QListWidgetItem *, const QPoint &)), this, SLOT(slotEffectSelected()));