So I was messing around earlier this evening, trying to find a way to connect my Mega Drive to my sound system ( two tweeters, one woofer and a subwoofer for those who are wondering ) and I stumbled upon a way to do that and record audio using Audacity and other recording software.

What you need:

1) A Model 1 Mega Drive/ Genesis ( Models 2 and 3 lack the headphone jack required for this to work)

2) A Computer running Microsoft Windows (It could be able to work in Mac and Linux but I don't know )

3) A male to male mini jack cable.

Instructions:

1) Insert one end of the Male to Male cable into your Mega Drive's headphone port and the other into a spare microphone port in your PC.

2) Turn on your Mega Drive

3) Open Audacity and enjoy!~