comparison audioio/AudioCallbackPlaySource.cpp @ 34:f6b15e0b6fde

* fix long-standing failure to silence layers that have been deleted
* fix deadlock in WaveFileModel::cacheFilled
* fixes and speedups to new CodedAudioFileReader
* trap signals in main, clean up temporary directory

 }
 
 void
 AudioCallbackPlaySource::addModel(Model *model)
 {
+    if (m_models.find(model) != m_models.end()) return;
+
     bool canPlay = m_audioGenerator->addModel(model);
 
     m_mutex.lock();
 
     m_models.insert(model);