fields (i.e. to/from/subject)

being build thread-safe.  Other libs (ie: SDL) may define it.

Create new XPDEV_THREAD_SAFE to know that xpdev is suposed to be thread-safe

(Solaris, OSX, Linux) when using SDL as non-static.

failure.

Don't pause/unpause output... just keep playing silence the whole time.
Fixes problem with click/pops on cut-off audio buffers.
Lower buffer size for lower latency.

This is probobly a bug, but I don't know which is intended.

ANSI music.

(Shouldn't actually be necessary, but oh well).

as follows:

SDL -> Win32 wave mapper -> ALSA -> OSS -> Win32 Beep() -> unix_beep()

Issues are as follows:
SDL requires SDL.dll/libSDL.so
Win32 wave mapper has a larget (~ .5 sec) delay between beeps on at least
Windows 2000 (possibly 9x and NT too)
ALSA Is completely untested.
OSS works fine (best tested)  ;-)
Beep() repeatedly plays the default beep wave on 9x.
unix_beep() is succeptable to various permissions problems.