StreamBox VCR does not work with password protected streams.

It never has and probably never will.

If the stream you want to record requires a username and password you will have to use a different recorder.

See the Streaming media recording software list.

If the stream is Windows Media try programs like.
ASFRecorder
GetASFStream
HiDownload
Net Transport
OEP-OEE
SDP
Stream Down
WMR

If the stream is Real Media try programs like.
HiDownload
Net Transport
OEP-OEE
R7C
Stream Down

Some of these programs will allow you to enter a username and password.
Some of these programs can or will prompt for a username and password.
Most of these programs will allow you to have the username and password in the URL.

Example.
mms://username:password@sitename.com/directory/filename.asf
rtsp://username:password@sitename.com/directory/filename.rm