#0  0x00007f6aa275bb20 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f6aa1354906 in QWaitCondition::wait(QMutex*, unsigned long) () at /lib64/libQtCore.so.4
#2  0x00007f6aa1353f2e in QThread::wait(unsigned long) () at /lib64/libQtCore.so.4
#3  0x00000000004ed61f in Mixer::stopProcessing() ()
#4  0x00000000004efaba in Mixer::setAudioDevice(AudioDevice*, Mixer::qualitySettings const&, bool) ()
#5  0x0000000000500ed2 in ProjectRenderer::startProcessing() ()
#6  0x000000000053d20c in ExportProjectDialog::startExport() ()
#7  0x000000000053d93a in ExportProjectDialog::startBtnClicked() ()
#8  0x00007f6aa1477950 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /lib64/libQtCore.so.4
#9  0x00007f6aa22b9732 in QAbstractButton::clicked(bool) () at /lib64/libQtGui.so.4
#10 0x00007f6aa1feea33 in QAbstractButtonPrivate::emitClicked() () at /lib64/libQtGui.so.4
#11 0x00007f6aa1fefe94 in QAbstractButtonPrivate::click() () at /lib64/libQtGui.so.4
#12 0x00007f6aa1feffa4 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /lib64/libQtGui.so.4
#13 0x00007f6aa1c6f110 in QWidget::event(QEvent*) () at /lib64/libQtGui.so.4
#14 0x00007f6aa1c1893c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#15 0x00007f6aa1c1f956 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#16 0x00007f6aa14637fd in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQtCore.so.4
#17 0x00007f6aa1c1ef5d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
    at /lib64/libQtGui.so.4
#18 0x00007f6aa1c99832 in QETWidget::translateMouseEvent(_XEvent const*) () at /lib64/libQtGui.so.4
#19 0x00007f6aa1c981fd in QApplication::x11ProcessEvent(_XEvent*) () at /lib64/libQtGui.so.4
#20 0x00007f6aa1cc1279 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQtGui.so.4
#21 0x00007f6a9e879e5a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#22 0x00007f6a9e87a1f0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#23 0x00007f6a9e87a29c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#24 0x00007f6aa1493d7e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#25 0x00007f6aa1cc1416 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtGui.so.4
#26 0x00007f6aa1462071 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#27 0x00007f6aa14623e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#28 0x00007f6aa20f743c in QDialog::exec() () at /lib64/libQtGui.so.4
#29 0x0000000000511980 in Song::exportProject(bool) ()
#30 0x00007f6aa1477950 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /lib64/libQtCore.so.4
#31 0x00007f6aa1c129d2 in QAction::triggered(bool) () at /lib64/libQtGui.so.4
#32 0x00007f6aa1c13d33 in QAction::activate(QAction::ActionEvent) () at /lib64/libQtGui.so.4
#33 0x00007f6aa207128d in QMenuPrivate::activateCausedStack(QList<QPointer<QWidget> > const&, QAction*, QAction::ActionEvent, bool) () at /lib64/libQtGui.so.4
#34 0x00007f6aa2075679 in QMenuPrivate::activateAction(QAction*, QAction::ActionEvent, bool) () at /lib64/libQtGui.so.4
#35 0x00007f6aa1c6f110 in QWidget::event(QEvent*) () at /lib64/libQtGui.so.4
#36 0x00007f6aa20798fb in QMenu::event(QEvent*) () at /lib64/libQtGui.so.4
#37 0x00007f6aa1c1893c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#38 0x00007f6aa1c1f956 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#39 0x00007f6aa14637fd in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQtCore.so.4
#40 0x00007f6aa1c1ef5d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
    at /lib64/libQtGui.so.4
#41 0x00007f6aa1c9a1cc in QETWidget::translateMouseEvent(_XEvent const*) () at /lib64/libQtGui.so.4
#42 0x00007f6aa1c981fd in QApplication::x11ProcessEvent(_XEvent*) () at /lib64/libQtGui.so.4
#43 0x00007f6aa1cc1279 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQtGui.so.4
#44 0x00007f6a9e879e5a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#45 0x00007f6a9e87a1f0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#46 0x00007f6a9e87a29c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#47 0x00007f6aa1493d7e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#48 0x00007f6aa1cc1416 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtGui.so.4
#49 0x00007f6aa1462071 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#50 0x00007f6aa14623e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#51 0x00007f6aa1467f79 in QCoreApplication::exec() () at /lib64/libQtCore.so.4
#52 0x000000000048dead in main ()
Detaching from program: /usr/local/bin/lmms, process 16307