In sound.py:_soundType, if the filename path has more than one period, 
as in, say, c:\Python2.2\x\y\noise.wav, the function fails.

fix: change    name,ext = filename.split('.')
to
    ext = filename.split('.')[-1]

However, the standard python library module 'sndhdr' is a more general 
approach to what _soundType is doing.  Thus, the above change led me to 
a more extensive rewrite.  Suggested new sound.py (from 
site-packages/PythonCardPrototype) and new samples/sounds/sounds.py are 
attached.

Richard