Sound from iPad to iMac.

Could you elaborate more on what it is you wish to accomplish? I'm not clear on what sort of "input device" you want the iPad to be.

If you're just trying to capture the sound from the iPad, using a stereo minijack cable to connect the iPad's headphone jack to the iMac's audio input, then using appropriate recording software to capture the audio, should work, though I haven't tried that myself. If that's what you're trying, please describe more fully your setup and where things seem to be breaking down.

Regards.

It works for me on my iPad with my iMac. Are you sure you have "line in" selected in the Input pane of the Sound system preference on the Mac (if you want confirm input from the iPad), and the volume up on your iPad, and that you have "Built in input" selected in the Recording section of the Audio I/O pane in the Audacity preferences? Note that you won't see any level activity in Audacity until you click the "record" button, unless there's a setting in Audacity I haven't found. You also have to set up playthrough in the same preference pane, and again it won't play through unless Audacity is recording (though you can pause the recording).

Hope this helps.