diff --git a/korman/korlib/__init__.py b/korman/korlib/__init__.py
index 7d1cfcc..3b5b690 100644
--- a/korman/korlib/__init__.py
+++ b/korman/korlib/__init__.py
@@ -56,20 +56,32 @@ except ImportError:
 
     def inspect_voribsfile(stream, header):
         raise NotImplementedError("Ogg Vorbis not supported unless _korlib is compiled")
+else:
+    from .console import ConsoleToggler
+    from .texture import TEX_DETAIL_ALPHA, TEX_DETAIL_ADD, TEX_DETAIL_MULTIPLY
+
+    def _wave_chunks(stream):
+        while not stream.eof():
+            chunk_name = stream.read(4)
+            chunk_offset = stream.pos
+            chunk_size = stream.readInt()
+            stream.skip(chunk_size)
+            yield {"name": chunk_name, "offset": chunk_offset, "size": chunk_size}
 
     def inspect_wavefile(stream, header):
         assert stream.read(4) == b"RIFF"
         stream.readInt()
         assert stream.read(4) == b"WAVE"
-        assert stream.read(3) == b"fmt"
+
+        # Read through the chunks until we find "fmt" and "data"
+        chunks = {}
+        for chunk in _wave_chunks(stream):
+            if chunk["name"] in {b"fmt ", b"data"}:
+                chunks[chunk["name"]] = chunk
+        assert chunks[b"fmt "]
+        assert chunks[b"data"]
+
+        stream.seek(chunks[b"fmt "]["offset"])
         header.read(stream)
 
-        # read thru the chunks until we find "data"
-        while stream.read(4) != b"data" and not stream.eof():
-            stream.skip(stream.readInt())
-        assert not stream.eof()
-        size = stream.readInt()
-        return (header, size)
-else:
-    from .console import ConsoleToggler
-    from .texture import TEX_DETAIL_ALPHA, TEX_DETAIL_ADD, TEX_DETAIL_MULTIPLY
+        return chunks[b"data"]["size"]
diff --git a/korman/properties/modifiers/sound.py b/korman/properties/modifiers/sound.py
index ccbaa42..e907497 100644
--- a/korman/properties/modifiers/sound.py
+++ b/korman/properties/modifiers/sound.py
@@ -240,7 +240,7 @@ class PlasmaSound(idprops.IDPropMixin, bpy.types.PropertyGroup):
                 plfade.lengthInSecs = 0.0
             else:
                 plfade.lengthInSecs = blfade.length
-                plfade.type = getattr(plFadeParams, blfade.fade_type)
+                plfade.type = getattr(plSound.plFadeParams, blfade.fade_type)
             plfade.currTime = -1.0
 
         # Some manual fiddling -- this is hidden deep inside the 3dsm exporter...
@@ -287,6 +287,7 @@ class PlasmaSound(idprops.IDPropMixin, bpy.types.PropertyGroup):
             header = plWAVHeader()
             if magic == b"RIFF":
                 size = korlib.inspect_wavefile(stream, header)
+                return (header, size)
             elif magic == b"OggS":
                 size = korlib.inspect_vorbisfile(stream, header)
                 return (header, size)