diff --git a/src/juce_appframework/audio/audio_sources/juce_AudioSource.h b/src/juce_appframework/audio/audio_sources/juce_AudioSource.h
index f74e61ed73..c6844b0c45 100644
--- a/src/juce_appframework/audio/audio_sources/juce_AudioSource.h
+++ b/src/juce_appframework/audio/audio_sources/juce_AudioSource.h
@@ -98,6 +98,10 @@ public:
 
         The source can use this opportunity to initialise anything it needs to.
 
+        Note that this method could be called more than once in succession without
+        a matching call to releaseResources(), so make sure your code is robust and
+        can handle that kind of situation.
+
         @param samplesPerBlockExpected  the number of samples that the source
                                         will be expected to supply each time its
                                         getNextAudioBlock() method is called. This
@@ -118,6 +122,10 @@ public:
         method called, so it should release any spare memory, etc. that it might have
         allocated during the prepareToPlay() call.
 
+        Note that there's no guarantee that prepareToPlay() will actually have been called before 
+        releaseResources(), and it may be called more than once in succession, so make sure your
+        code is robust and doesn't make any assumptions about when it will be called.
+
         @see prepareToPlay, getNextAudioBlock
     */
     virtual void releaseResources() = 0;