when i do this i don't see a "use audio for" selection

i have exactly the same problem, could you solve it?

snuke21,

Check this.

http://support.apple.com/kb/HT3625?viewlocale=en_US&locale=en_US

Also it appears that depending on when your MBP was built it may not support audio in.

http://store.apple.com/us/browse/home/shop_mac/family/macbook_pro

2012 models and later don't have audio in. You would need to use a USB interface.

Hi all,

I've had a similar issue with my 2012 MBP. I realise that it doesn't take an audio input but it DOES take an iphone headset with mic on it. So surely there must be a cable out there somewhere that has 4 conductors instead of 3 or 2 on it, which would allow us to input audio...?

malcolm007,

Here is a pin description of the 4 pin connector, there impedence and shunting that needs to be taken into consideration, not to mention the response curve that this is optomized for,ie:headset mic response. There could be potential damaged cause by incorrect matching and shunting (shorting certain pins to ground) you might consider calling Apple and see what their response is. You can even try experimenting at your own risk, I myself can make no recomendation and would advise against it as you could risk damaging your device. I found no data that would allow an informed decision on my part. The audio quality would most likely be sub par for a music type of application anyways, as it is most likey optomized for the headset mic as prviously mentioned.

USB interfaces are cheap and most sound good and will definatly provide a safe and flexible way to get in.

IMHO

http://www.speechrecsolutions.com/assets/iPad_and_microphones.pdf

Ok thanks. That's very helpful and will avoid me wasting time on something that does sound futile! USB it is!