There are a few different ways that you can copy and paste a voice recording. One way is to use a program like Audacity to record the audio and then export it as an MP3 file. You can then use a program like iTunes to convert the MP3 file into an AAC file. Another way is to use a program like QuickTime to record the audio and then export it as an AIFF file. You can then use a program like iTunes to convert the AIFF file into an AAC file.