I agree with what Howard Chu said.
As a help seeker, I am grateful for what I have got from here.
I got the latest hulu.sh.
The zip packet seems to be much smaller.
Unzipping it, I renamed the folder svnetc, and put it into the cygwin folder.
And I put rtmpdump.exe, rtmpsuck.exe, rtmpsrv.exe into svnetc.
Running a hulu video on firefox, I ran the cygwin code, then the video stopped immmediately. Firefox said the plugins of adobe flash player have collapsed.
I replayed the video, and pressed the enter key as the code told me, the video stopped right away again with adobe plugins collapsed.
I got these

NO printing results at all.)
Administrator@pc ~
$ /svnetc/hulu.sh
Press enter after video starts
Printing results
Make choice. Avoid level3.
-q
+ rtmpdump -W
http://download.hulu.com/huludesktop.swf -a '?' -o out.flv -r '' -y ''
/svnetc/hulu.sh: line 46: rtmpdump: command not found
Then I tried chrome.
The video went on smoothly.
but I got the following
Administrator@pc ~
$ /svnetc/hulu.sh
Press enter after video starts
Printing results
Usage: dumper [OPTION] FILENAME WIN32PID
Dump core from WIN32PID to FILENAME.core
-d, --verbose be verbose while dumping
-h, --help output help information and exit
-q, --quiet be quiet while dumping (default)
-V, --version output version information and exit
Make choice. Avoid level3.
-q
+ rtmpdump -W
http://download.hulu.com/huludesktop.swf -a '?' -o out.flv -r '' -y ''
/svnetc/hulu.sh: line 46: rtmpdump: command not found
My operating system is XP
Firefox is the latest version from the official site , V15.
Adobe activex 11.4.402.265 with the plugins 11.2.202.235
Please help me .