I know that the new RealOne Player has built in CD burning support. Not sure but it may be worth seeing if it will burn the .rm files to disk so that they can be played in the car. I know that it does it for mp3's. Would be strange if it didn't support it's own format.
Try using Windows sound recorder and record it into wav, I have never heard any difference in quality, you are recording directly from the source digital, to digital. then you can convert to mp3 were you will loose quality.
My sister who live out in Ca used to send me files via internet of music she did with her band. They was in real Audio format. I didn't like it, so I used Streambox Ripper(old version) to convert them to MP3. You can also Batch Convert.
But now, the new version do not allow that anymore. So look around for the older version of it.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS