HOW TO – Improvised amplified microphone

Ted writes – “I tried using a regular headset microphone with my Mac mini and wondered why my voice wasn’t being picked up. Then I realized, after reading the Mac mini manual, that the audio input is line-level only. Since I don’t have an amplified microphone, I decided to improvise one from an old cassette recorder. It should tide me over until I can get a USB headset.” – Link.