diff --git a/panda/src/audio/audioLoadRequest.I b/panda/src/audio/audioLoadRequest.I
index f5d9b8f5f8..baeb3847af 100644
--- a/panda/src/audio/audioLoadRequest.I
+++ b/panda/src/audio/audioLoadRequest.I
@@ -16,7 +16,7 @@
  * to begin an asynchronous load.
  */
 INLINE AudioLoadRequest::
-AudioLoadRequest(AudioManager *audio_manager, const std::string &filename,
+AudioLoadRequest(AudioManager *audio_manager, const Filename &filename,
                  bool positional) :
   _audio_manager(audio_manager),
   _filename(filename),
@@ -24,6 +24,19 @@ AudioLoadRequest(AudioManager *audio_manager, const std::string &filename,
 {
 }
 
+/**
+ * Create a new AudioLoadRequest, and add it to the loader via load_async(),
+ * to begin an asynchronous load.
+ */
+INLINE AudioLoadRequest::
+AudioLoadRequest(AudioManager *audio_manager, MovieAudio *source,
+                 bool positional) :
+  _audio_manager(audio_manager),
+  _source(source),
+  _positional(positional)
+{
+}
+
 /**
  * Returns the AudioManager that will serve this asynchronous
  * AudioLoadRequest.
@@ -36,7 +49,7 @@ get_audio_manager() const {
 /**
  * Returns the filename associated with this asynchronous AudioLoadRequest.
  */
-INLINE const std::string &AudioLoadRequest::
+INLINE const Filename &AudioLoadRequest::
 get_filename() const {
   return _filename;
 }
diff --git a/panda/src/audio/audioLoadRequest.cxx b/panda/src/audio/audioLoadRequest.cxx
index e3a04d38b8..138979de83 100644
--- a/panda/src/audio/audioLoadRequest.cxx
+++ b/panda/src/audio/audioLoadRequest.cxx
@@ -21,7 +21,9 @@ TypeHandle AudioLoadRequest::_type_handle;
  */
 AsyncTask::DoneStatus AudioLoadRequest::
 do_task() {
-  set_result(_audio_manager->get_sound(_filename, _positional));
+  set_result(_source != nullptr
+    ? _audio_manager->get_sound(_source, _positional)
+    : _audio_manager->get_sound(_filename, _positional));
 
   // Don't continue the task; we're done.
   return DS_done;
diff --git a/panda/src/audio/audioLoadRequest.h b/panda/src/audio/audioLoadRequest.h
index 1c07098b91..5251a67188 100644
--- a/panda/src/audio/audioLoadRequest.h
+++ b/panda/src/audio/audioLoadRequest.h
@@ -33,11 +33,14 @@ public:
 
 PUBLISHED:
   INLINE explicit AudioLoadRequest(AudioManager *audio_manager,
-                                   const std::string &filename,
+                                   const Filename &filename,
+                                   bool positional);
+  INLINE explicit AudioLoadRequest(AudioManager *audio_manager,
+                                   MovieAudio *source,
                                    bool positional);
 
   INLINE AudioManager *get_audio_manager() const;
-  INLINE const std::string &get_filename() const;
+  INLINE const Filename &get_filename() const;
   INLINE bool get_positional() const;
 
   INLINE bool is_ready() const;
@@ -48,7 +51,8 @@ protected:
 
 private:
   PT(AudioManager) _audio_manager;
-  std::string _filename;
+  Filename _filename;
+  PT(MovieAudio) _source;
   bool _positional;
 
 public: