Looking for the most efficient conversion

[epete]

Now that I have several Howard Stern recordings in *.asf format at 51 kbps, I would like to convert them to MP3.

If I convert them to 128 kbps, it will simply take up a lot of space and not improve the audio quality as the master is 51k.

I see there are other options such as 64K and 32K. 32K will defenitely reduce the audio quality.

I assume the most efficient conversion would be a conversion to MP3 at 51K. Is this possible?

IIf Replay Converter could not do this, I was wondering if Microsoft Encoder would do this for me?

http://www.microsoft.com/downloads/d...DisplayLang=en

[epete]

Windows Media Encoder actually installs several utilities that allow me to trim the asf files and preserve the origional data. No conversion needed. I may simply keep the files in asf