[Lazarus] How to produce a tone at Tone frequency for duration MSecs (milliseconds)

[Michael Schnell]

  You cant get a resolution of milliseconds in a user program.

So I would create a wave file that contains the correct "bleep".

With Delphi I once used this wave player component: 
http://www.un4seen.com/. I don't know if it's been tested with Lazarus 
and if something similar can be done on Linux.

I used some free tool to create sine and similar waves in wav-files.

-Michael