I had no any problem recording Windows Media streams with WM Recorder and Real Media streams with RM Recorder (I used the PRO mode in both).

I also tried to record with Mass Downloader and Net Transport.
After setting up a referrer URL and one of the following user agents:
- "NSPlayer/9.0.0.XXXX" for Windows Media streams (without quotes, X is a 4-digit number)
- "RMA/1.0 (compatible; RealMedia)" for Real Media streams
both were able to record.

I used free Project URL Snooper to find hidden stream URLs. Although there was no problem to find Windows Media stream URLs by right-clicking on the embedded Windows Media Player and selecting "Properties".

As for the stream URLs they appeared to look somewhat different, namely:
http://video.motogp.com/ppv_multimed...XXXX_XXXXX.wmv
http://video.motogp.com/ppv_multimed...XXXXX_XXXXX.rm
And they were not password-protected.

There may be some other URLs. You may PM me them.