Vista - Convert Flash Vids to mp3

I've been trying to hack together a Powershell script to use VLC media
player to extract an mp3 from a downloaded flash video. The problem
I've been having is with supplying the command line arguments to
vlc.exe. No matter how I teak it, nothing seems to work. I've posted
the latest error at the end of the post.

$VlcPath = "& 'C:\Program Files\VideoLAN\VLC\VLC.exe' "
cd "F:\Music\Ripping"
$flashvids = Get-ChildItem * -Include *.flv -Recurse
foreach ($flashvid in $flashvids)
{
$newFileName = ($flashvid -replace "\.flv", "\.mp3")
$cmdline = ("'" + $flashvid.FullName +
'":sout=#transcode{acodec=mp3,ab=320,channels=2}' + '"')
Invoke-Expression "C:\Program Files\VideoLAN\VLC\vlc.exe F:\Music
\Ripping\
$flashvid.flv :sout=#transcode{acodec=mp3,ab=320,channels=2}:duplicate{dst=std{access=file,mux=wav,dst=
$flashvid.Fullname.mp3}} vlc:quit)"
}


ERROR MSG...

Invoke-Expression : Unexpected token ')' in expression or statement.
At C:\scripts\Powershell\Com\ConvertFlashVidsToMp3.ps1:17 char:19
+ Invoke-Expression <<<< "C:\Program Files\VideoLAN\VLC\vlc.exe F:
\Music\Ripping\$flashvid.flv :sout=#transcode{ac
odec=mp3,ab=320,channels=2}:duplicate{dst=std{access=file,mux=wav,dst=export.mp3}}
vlc:quit)"

The original idea was taken from this blog post:

How to extract audio from FLV files using VLC
http://blog.hartwork.org/?p=58

stephenodonoghue@xxxxxx wrote:With PSCX (www.codeplex.com/powershellcx), there's an echoargs.exe
utility that can help you determine how PowerShell will parse stuff.

Just one question... Are you sure there's a closing ")" at the end of
that command? I don't see an opening one, which seems odd.

Marco

--
Microsoft MVP - Windows PowerShell
http://www.microsoft.com/mvp

PowerGadgets MVP
http://www.powergadgets.com/mvp

Blog:
http://marcoshaw.blogspot.com

On the line with Invoke-Expression? It may have been that way
originally. But I've done so much mucking around with it, that I can't
say for certain.

How about simplifying this and providing us the DOS command string that
would actually work on a single file?

I'd get the program (if free or a demo is available), but I'm short on
free time these days to go that far.

Marco