to test the new setparameters() interface.
Modified play_sound_file() to print the elapsed time taken to play the
test sample (to the nearest 0.1 sec).
test_linuxaudiodev.py) are no longer run by default. This is
because they don't always work, depending on your hardware and
software. To run these tests, you must use an invocation like
./python Lib/test/regrtest.py -u audio test_ossaudiodev