#30 iaxc_play_sound() repeat issue on XP

[Mats Bengtsson]

If I call iaxc_play_sound(&noise,0) with
noise.repeat = 0
and a 2sec tone on WinXP (recent SVN) I get no sound.
However, if I increase repeat = 1 I get the noise played once.
On other platforms (linux+macosx) I get the noise played
once for repeat = 0, and twice for repeat = 1. This is also
true on WinXP using the April SVN.
It sometimes can happen that if I play a noise with, say repeat=3
it plays the noise four times as expected, but the last time is very
scrappy(?).

Mats