On the toolbar, click Properties, and then click the Compression tab.
Click Edit, and then, in Mode, click CBR.
In Codec, click Windows Media Audio 9 Voice, and then click OK.
Click the Processing tab, and then click Voice only or Audio with voice emphasis.
For audio with voice emphasis, you have the option of creating an optimization definition file, which identifies the places in the audio where music starts and ends.
If you created an optimization definition file, enter the name of the file.
