题目内容
Always choose stereo files because they are needed by all of us.
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If you record your own voice, first press the Record button, begin to speak and finally hit Stop button when you finish recording.
Press Undo in the Edit menu and you can travel back to previous states of the audio file.
You can hit the Undo button only once to remove one edit.
You have multiple methods to select part of an audio file.
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