How to Convert Cassette Tapes to MP3s for Free on a Mac

My wife recently was deep cleaning and ran across a few tape cassettes that she remembered she really liked and asked if I could convert or digitize the tapes to MP3s for use in iTunes and on her iPhone. I figured it wasn’t a big deal so I told her I could before I thought through the process (that’s fairly typical for me). In any case, converting tapes to MP3s using a Mac ended up being simple enough. After the jump, you can read my step-by-step how-to on converting cassette tapes to MP3 on a Mac.