diff --git a/sound/outputs/openal_out.cpp b/sound/outputs/openal_out.cpp
index 649a56aef3..9106901563 100644
--- a/sound/outputs/openal_out.cpp
+++ b/sound/outputs/openal_out.cpp
@@ -108,10 +108,6 @@ void OpenAL_Sound::setRepeat(bool rep)
   alSourcei(Source, AL_LOOPING, rep?AL_TRUE:AL_FALSE);
 }
 
-void OpenAL_Sound::setup()
-{
-}
-
 // Constructor used for cloned sounds
 OpenAL_Sound::OpenAL_Sound(ALuint buf, int *ref)
   : refCnt(ref), bufferID(buf)
@@ -125,19 +121,31 @@ OpenAL_Sound::OpenAL_Sound(ALuint buf, int *ref)
   alSourcei(inst, AL_BUFFER, bufferID);
 }
 
-OpenAL_Sound::OpenAL_Sound(SampleSource *input)
+OpenAL_Sound::OpenAL_Sound(SampleSourcePtr input)
 {
   // Get the format
   int fmt, rate;
   getALFormat(inp, fmt, rate);
 
-  // Read the entire stream into a buffer
-  BufferStream buf(input);
-
-  // Move the data into OpenAL
+  // Set up the OpenAL buffer
   alGenBuffers(1, &bufferID);
   assert(bufferID != 0);
-  alBufferData(bufferID, fmt, &buf.getPtr(), buf.size(), rate);
+
+  // Does the stream support pointer operations?
+  if(input->hasPtr)
+    {
+      // If so, we can read the data directly from the stream
+      alBufferData(bufferID, fmt, &input.getPtr(), input.size(), rate);
+    }
+  else
+    {
+      // Read the entire stream into a temporary buffer first
+      BufferStream buf(input);
+
+      // Then copy that into OpenAL
+      alBufferData(bufferID, fmt, &buf.getPtr(), buf.size(), rate);
+    }
+
   checkALError("loading sound buffer");
 
   // Create a source
diff --git a/sound/outputs/openal_out.h b/sound/outputs/openal_out.h
index a0b8ed4129..115c3c13e3 100644
--- a/sound/outputs/openal_out.h
+++ b/sound/outputs/openal_out.h
@@ -22,7 +22,7 @@ class OpenAL_Sound : public Sound
   int *refCnt;
 
  public:
-  OpenAL_Sound(SampleSource *input);
+  OpenAL_Sound(SampleSourcePtr input);
   OpenAL_Sound(ALuint buf, int *ref); // Used for cloning
   ~OpenAL_Sound();
 
@@ -83,10 +83,10 @@ class OpenAL_Factory : public SoundFactory
         }
     }
 
-  Sound *load(const std::string &file, bool stream=false) { assert(0); }
-  Sound *load(Stream::Stream *input, bool stream=false) { assert(0); }
-  Sound *load(SampleSource* input, bool stream=false)
-  { return new OpenAL_Sound(input); }
+  SoundPtr load(const std::string &file, bool stream=false) { assert(0); }
+  SoundPtr load(Stream::StreamPtr input, bool stream=false) { assert(0); }
+  SoundPtr load(SampleSourcePtr input, bool stream=false)
+  { return SoundPtr(new OpenAL_Sound(input)); }
 
   void update() {}
   setListenerPos(float x, float y, float z,
diff --git a/sound/source.h b/sound/source.h
index 0301f4bae8..f987dfe4ff 100644
--- a/sound/source.h
+++ b/sound/source.h
@@ -17,15 +17,7 @@ class SampleSource : public Stream::Stream
   bool isEof;
 
  public:
-  SampleSource()
-    {
-      // These are usually not needed for sound data
-      isSeekable = false;
-      hasPosition = false;
-      hasSize = false;
-
-      isEof = false;
-    }
+  SampleSource() : isEof(false) {}
 
   /// Get the sample rate, number of channels, and bits per
   /// sample. NULL parameters are ignored.
diff --git a/sound/sources/audiere_source.cpp b/sound/sources/audiere_source.cpp
index d99c6c4ee6..1a0dfe8dc0 100644
--- a/sound/sources/audiere_source.cpp
+++ b/sound/sources/audiere_source.cpp
@@ -109,7 +109,7 @@ AudiereSource::AudiereSource(const std::string &file)
   setup();
 }
 
-AudiereSource::AudiereSource(Stream::Stream *input)
+AudiereSource::AudiereSource(Stream::StreamPtr input)
 {
   // Use our Stream::AudiereFile implementation to convert a Mangle
   // 'Stream' to an Audiere 'File'
diff --git a/sound/sources/audiere_source.h b/sound/sources/audiere_source.h
index 1348e112c0..671595a1af 100644
--- a/sound/sources/audiere_source.h
+++ b/sound/sources/audiere_source.h
@@ -33,7 +33,7 @@ class AudiereSource : public SampleSource
   AudiereSource(const std::string &file);
 
   /// Decode the given sound stream
-  AudiereSource(Stream::Stream *src);
+  AudiereSource(Stream::StreamPtr src);
 
   /// Read directly from an existing audiere::SampleSource
   AudiereSource(audiere::SampleSourcePtr src);
diff --git a/sound/sources/ffmpeg_source.h b/sound/sources/ffmpeg_source.h
index 5317c11c02..d185098fdb 100644
--- a/sound/sources/ffmpeg_source.h
+++ b/sound/sources/ffmpeg_source.h
@@ -28,7 +28,7 @@ class FFMpegSource : public SampleSource
   FFMpegSource(const std::string &file);
 
   /// Decode the given sound stream (not supported by FFmpeg)
-  FFMpegSource(Stream::Stream *src) { assert(0); }
+  FFMpegSource(Stream::StreamPtr src) { assert(0); }
 
   ~FFMpegSource();
 
diff --git a/sound/sources/loadertemplate.h b/sound/sources/loadertemplate.h
index 0b668fffa6..f1ebea2d56 100644
--- a/sound/sources/loadertemplate.h
+++ b/sound/sources/loadertemplate.h
@@ -16,7 +16,7 @@ class SSL_Template : public SampleSourceLoader
     return new SourceT(file);
   }
 
-  SampleSource *load(Stream::Stream *input)
+  SampleSource *load(Stream::StreamPtr input)
   {
     assert(canLoadStream);
     return new SourceT(input);
diff --git a/sound/sources/memsource.h b/sound/sources/memsource.h
index 1e38d90524..72624b899c 100644
--- a/sound/sources/memsource.h
+++ b/sound/sources/memsource.h
@@ -6,19 +6,21 @@
 namespace Mangle {
 namespace Sound {
 
-/// A sample source reading directly from a memory buffer
-class MemorySource : public SampleSource
+/// A class for reading raw samples directly from a stream.
+class Stream2Samples : public SampleSource
 {
-  char *buf;
-  size_t len;
-  size_t pos;
-
   int32_t rate, channels, bits;
+  Stream::StreamPtr inp;
 
  public:
- MemorySource(void *_buf, size_t _len, int32_t _rate, int32_t _channels, int32_t _bits)
-   : len(_len), pos(0), rate(_rate), channels(_channels), bits(_bits)
-    { buf = (char*)_buf; }
+  Stream2Samples(Stream::StreamPtr _inp, int32_t _rate, int32_t _channels, int32_t _bits)
+   : inp(_inp), rate(_rate), channels(_channels), bits(_bits)
+    {
+      isSeekable = inp->isSeekable;
+      hasPosition = inp->hasPosition;
+      hasSize = inp->hasSize;
+      hasPtr = inp->hasPtr;
+    }
 
   /// Get the sample rate, number of channels, and bits per
   /// sample. NULL parameters are ignored.
@@ -29,20 +31,16 @@ class MemorySource : public SampleSource
     if(_bits) *_bits = bits;
   }
 
-  bool eof() const { return pos == len; }
-
   size_t read(void *out, size_t count)
-  {
-    assert(len >= pos);
-
-    if(count > (len-pos))
-      count = len-pos;
-
-    if(count) memcpy(out, buf+pos, count);
-    pos += count;
-
-    return count;
-  }
+    { return inp->read(out, count); }
+
+  void seek(size_t pos) { inp->seek(pos); }
+  size_t tell() const { return inp->tell(); }
+  size_t size() const { return inp->size(); }
+  bool eof() const { return inp->eof(); }
+  void *getPtr() const { return inp->getPtr(); }
+  void *getPtr(size_t size) const { return inp->getPtr(size); }
+  void *getPtr(size_t pos, size_t size) const { return inp->getPtr(pos, size); }
 };
 
 }} // namespaces