Quote Originally Posted by Fredrick View Post
I tryed to do the sound card version today byt no one of my 2 computers have a "Line in" or "Audio in" input, only a input with a microphone symbol on and that doesīt work.
You still might be able to use the mic input, if you attenuate the signal 1:1000 (a 100K and a 100ohm resistor divider, perhaps?). The waveform might not look picture perfect, but will surely be good enough for your purpose.

Alternately, if you have a serial port, you might want to look at Dante's infrax utility at http://www.geocities.com/tdanro/irman/irman.html

This would require you to build a small capture circuit, and be informed this does not work reliably with USB-to-serial interfaces. On a native serial port (or a PCI based additional one) it works quite brilliantly.

Regards,

Anand