Originally Posted by thionylx
I use a pair of wired ear buds that have a built in microphone for calls. I'm running CM11 not stock but I just tested and "Sound Recorder" is more than happy to receive its input via the headset jack. I would believe it's just a matter of finding the right converter plug for your guitar.
I have used ASR for recording, works fine over the headset jack. It is a mono source of course. It won't work with a standard 3.5mm plug of course, you have to have the signal on the microphone portion - which is ground (silence) for the standard plugs.
I used the adapter that came with Dragon Naturally Speaking. It has two 3.5mm stereo plugs to one 3.5mm stereo+mic plug. If you use a 3.5mm stereo cable into the mic side of this adapter it works fine.
You could probably rig up something from Radio Shack, but I didn't have to because this worked, and I don't need the adapter for my computer so it was just sitting in the cord box...