To increase the maximum recording time in the Sound Recorder utility:
Make sure your microphone is muted so it will not pick up sound.
Click Record, and then let Sound Recorder run for 60 seconds.
After Sound Recorder stops recording, click Save As on the File menu, and
name the file Blank.wav.
To increase the maximum recording time in Sound Recorder, click Insert File
on the Edit menu, and then insert the Blank.wav file that you saved. When
you do this, the maximum recording time is increased by 60 seconds. You can
repeat this step once for each additional minute of recording time that you
want to add. For example, for a 5-minute recording time, insert the
Blank.wav file five times.