I have recorded these files using Real Producer. It's the only program I've come across that keeps the bytes down to a manageable up/download level for people like me who have to make do with a slow modem connection.
If you haven't got RealPlayer installed on your machine, go over to
Real.com and download their free version.
Or go
over here and download an older version, real8 for instance, smaller download, less hassle from pop-ups.