I edit sermons for the Church I attend to submit for the radio station. I bought an iPad in an attempt to save time by taking it with me to work to work on during my lunch break. I found very quickly that I was not able to import a project created in GarageBand for Mac into GarageBand for the iPad, neither does it work trying to import the mp3 file for editing. So what I did is fabricate myself a cable to do this. I took a wired mobile headset with the 4 conductor 1/8 jack and unsoldered it from the mic. I then soldered the ground and mic wire from the headset i took apart to the ground and conductor to a mono headphone wire jack. I know that this may sound complicated but I found that I am able to use the voice recording instrument in GarageBand to record audio that I play from a Mac or regular walkman cd player. I hit play on the audio source (cd player) and hit record on the iPad. The only problem I have found so far is that when the screen times out and the iPad auto locks it causes the recording to stop even though the top system bar is red and states that GarageBand is recording. I found out that when the iPad is lock is is actually not recording. I will have to disable the auto lock feature on my iPad to see if this will allow the iPad to continue to record the full 45 minute audio file.
I hope that Apple will allow regular compatibility between GarageBands in the future. Please let me know if any of you find a better way to do this same task. Thanks!!