Actually, it is not possible to use the 'with' statement in the
ossaudiodev module:

>>> import ossaudiodev
>>> with ossaudiodev.open('/dev/dsp', 'r') as device:
...     pass
...
Traceback (most recent call last):
  File "<stdin>", line 1 in <module>
AttributeError: 'ossaudodev.oss_audio_device' object has no attribute
'__exit__'

In order to provide a similar interface as standard Python files, and
encourage safe coding practices, the 'with' statement should be
supported in the ossaudiodev module.

Thanks.