Well, sorry about posting usuless stuff, but here’s a speaker
emulator with a somewhat usable API. The emulator has a HP filter for
more accurate sound - and feedback delay to undo the attempt to be
true to the original sound. 
It should be possible to implement on top of any sound(freq) +
nosound() style speaker API. (It should “kind of” work with
play(freq, duration) style APIs as well, but not very well… Some
internal buffering would help a lot.)
http://www.angelfire.com/ar/agc/download/speaker.tgz
//David
.- M A I A -------------------------------------------------.
| Multimedia Application Integration Architecture |
| A Free/Open Source Plugin API for Professional Multimedia |
----------------------> http://www.linuxaudiodev.com/maia -' .- David Olofson -------------------------------------------. | Audio Hacker - Open Source Advocate - Singer - Songwriter |--------------------------------------> david at linuxdj.com -’