how to automatically start a computer recording

I thought there was a way to have the recording automatically start once I start streaming the sound through my computer sound board.
In other words, I want to press “record” in audacity but not have it start recording until I get the sound started.

thanks

Yes. Audacity has a timer.
http://manual.audacityteam.org/o/man/faq_recording_how_to_s.html#timer

Koz

Audacity also has “Sound Activated Recording” http://manual.audacityteam.org/o/man/transport_menu.html#sar

thanks.
I saw that preference but didn’t understand how to use it.