This information pertains to LabQuest 2 and LabQuest 3.
If you have an original LabQuest, see this article.
You can use the Sound Recorder App to record sounds generated from the Audio Function Generator. However, for playback, you can only have the Sound Recorder App open. Otherwise, you will see this message:
To resolve this problem, close the Audio Function Generator App. Then, return to the Sound Recorder App to play back your recording.