i can help with this way quicker and cheaper and better quality.
Ok you need these items.
1. Garageband any version.
2. A headphone to headphone cable.
3. A USB sound card a lot of these even cheaper ones for mac compatibility can be found at amazon here is the link to one.
http://www.amazon.com/dp/B00OJ5AV8I/?tag=macforums0e4-20
it's only 8.99
Now all you do is connect the headphone to headphone cable to the mic input on the usb sound card plug the other end into your tape deck and then connect the usb sound card to your macintosh.
How you set up the software.
Now you have the macintosh on and everything set up go into your apple menu.
Select system prefs
select sound
choose the usb sound card from the input selection not the output.
once done close the sound and system pref.
Now startup garageband start a new project select garageband at the top of the screen and select preferences and tell it the device of which you are recording from which would be the usb sound card.
Hit play on the tape deck and hit record in garageband.
And your finished.
once recorded into garageband you can apply filters and even dolby digital tracks to it and it will sound like she is there in the room with you.
I use to do this a lot with my 8-track collections it's pretty bad #@! option.