ui->removeButton->setDisabled(true);
ui->playButton->setDisabled(true);
+ connect(ui->listWidget,SIGNAL(doubleClicked(QModelIndex)),this,SLOT(onPlay()));
connect(ui->playButton,SIGNAL(clicked()),this,SLOT(onPlay()));
connect(ui->removeButton,SIGNAL(clicked()),this,SLOT(onRemove()));
connect(ui->repeatButton,SIGNAL(clicked()),this,SLOT(onRepeat()));