This settings defines the kilobytes per second into which WMA files will be converted. The choices are:
Low Bitrate Voice-oriented (6.5 Kbps)
FM Radio Quality (18.8 Kbps Mono)
FM Radio Quality (28.8 Kbps Stereo)
Dial-up Modem (56 Kbps Stereo)
Single-channel ISDN (64 Kbps Stereo)
Near-CD Quality (64 Kbps Stereo)
CD-quality (96 Kbps Stereo)
CD-quality Transparency (128 Kbps Stereo)