Dump the effective format and prepare the tone signal accordingly.
Play tones from the secondary buffers at -3dB rather than -12dB.
Always print the volume the tone is going to be played at.
Remove the gamedev URL.
basic tests such as querying its characteristics and changing its
format.
Changing the format requires that we call SetcooperativeLevel first,
which means we need an hwnd. So the test must now link with
user32.dll.
Francois Gouget