If the source is CD, then I suggest making 32kbps mp3 mono files. This is the bitrate I use for spoken word files. I find that using a bitrate higher than this doesn’t improve sound quality much for spoken word files, and gives larger files. Not only does using a lower bitrate save space, it also gives longer battery life on the player.
Sandisk players get much longer battery life playing mp3 files than WMA files.
Not only will using mono give you better sound quality for the same file size. When a speaker is moving around while speaking, listening in stereo might give you a dizzy feeling.
