All I have is notepad, so I'm not familiar with all of the features of full finale, but if you really need to you can get audacity (http://audacity.sourceforge.net/) and the add-on mp3 encoder (http://audacity.sourceforge.net/help/faq?s=install&item=lame-mp3) and just plug your headphone jack into your microphone jack with a male-to-male 3.5mm audio cable (like this one http://www.amazon.com/3-5mm-Stereo-Male-Cable-ft/dp/B0002ZPJZO). simply press record in audacity and then play in notepad and then export as an mp3. It's consistent and pretty easy, but prolly not as good quality as most other ways.
Hope that helped
~Swordomar
Hope that helped
~Swordomar