Convert link to Direct Download Link

[SongLive]

Hi !

I'm trying to download a video from Google Video and convert it to .wmv directly, without having to download the .flv first.

I have managed to do this 2 years ago succesfully via the following method.

go to www.keepvid.com
enter your google video url
copy the .flv url from keepvid.com
go to www.media-convert.org
press "conversion from url"
paste keepvid flv url
select file format: flv
select target format: wmv
convert.

However, this doesn't work anymore.
Why ? Simple: I don't get a direct link to the .flv anymore from keepvid.com or any other online media ripper service I tried. (Savetube, Tubegrip...)
I always get links like this:

http://vp.video.google.com/videodow...0214767\x26clickUrl\x3d\x22\x3e\x3c/embed\x3e

OR

http://vp.video.google.com/videodow...gin=0&len=10807330&docid=-4628461537770214767

See, there is no .flv extension on the end. that's the problem. Media-convert doesn't recognize it now and gives an error.
However, if you press the link in your browser URL bar, you will get promted to download the file. (.FLV). Which means the URL is valid, only the file is "hidden".

My question:

How can I convert that long URL to a direct download url with an .FLV extension on the end ?

Thanks in advance !!