foobar2000=wac,foobar2000.exe,{DA7CD0DE-1602-45e6-89A1-C2CA151E008E}/1,xxx,xxx,xxx,xxx,xxx,xxx,xxx,0,1,foobar2000

Have you tried my suggestion here: [a href='index.php?act=findpost&pid=476077']Interesting SetPoint hacking[/a]?

It's a more general solution to logitech multimedia keys, so doesn't require foobar-specific clsid or other details.

Alex

I'm not using any additional drivers or software.

• Don't use SetPoint. This is the one Hancoque uses, and is fine, but does mean that you can't assign special actions to any of your special buttons, or buttons on a Logitech mouse (if you're using one too).
  
• Instruct SetPoint on how to perform multimedia key actions to Foobar specifically. SetPoint has a list of media players and instructions on how to control them (in players.ini), so after it swallows the actual keypress it can then perform the appropriate action on the media player. This has the advantage of being able to work on media players that don't support multimedia keys natively, but has the disadvantage of only being able to work on media players that SetPoint knows about. To do this, use the players.ini modification described in other posts (although I don't think anyone has posted a clsid for 0.9.5 yet, but I might be wrong)
  
• Selectively prevent SetPoint from swallowing multimedia key actions. SetPoint can be configured not to swallow specific keys, and allow the keypress events to pass through to the system as normal. This can't be done through the SetPoint UI, though, you have to modify the user.xml file (full instructions [a href='index.php?act=findpost&pid=476077']here[/a]). The advantage of this is that it will work with any media player that handles the standard multimedia keys, which includes Foobar2000 if configured properly.
  
  This, as MGL2000 points out, is a per-user thing. Although I'd still argue it is a more elegant solution than number 2, that's just my personal preference.
  
  As far as side effects go, it will have the side effect of not working with any media player that does not handle standard multimedia keys, and not being able to assign custom actions to the buttons through SetPoint. If you want to assign a custom action in the future, just reverse the process for the button you want to be able to assign.

foobar2000=wac,foobar2000.exe,{97E27FAA-C0B3-4b8e-A693-ED7881E99FC1},xxx,xxx,xxx,xxx,xxx,xxx,xxx,0,1,Foobar2000

I had the same problem
I've installed WinID to get the new window class and it works.  (Foobar2000 0.9.5 - Vista)

Here is the new line for C:\Program Files\Logitech\SetPoint\player.ini 

Quote

foobar2000=wac,foobar2000.exe,{97E27FAA-C0B3-4b8e-A693-ED7881E99FC1},xxx,xxx,xxx,xxx,xxx,xxx,xxx,0,1,Foobar2000

edit: the MM buttons work while foobar is maximized, but not while its minimized or as a tray icon. Funny thing is, they work on every other mediaplayer I have, minimized, iTunes, winamp etc.. but iLike foobar

Quote from: FetteForskrudd on 2008-07-16 00:21:47

edit: the MM buttons work while foobar is maximized, but not while its minimized or as a tray icon. Funny thing is, they work on every other mediaplayer I have, minimized, iTunes, winamp etc.. but iLike foobar

Have you checked the "Global Hotkey" box on the MM buttons?
I have a Logitech media keyboard 600 and I have setpoint installed. The buttons always work for me.

For XP, foobar 0.9.5.4
foobar2000=wac,foobar2000.exe,{E7076D1C-A7BF-4f39-B771-BCBE88F2A2A8},xxx,xxx,xxx,xxx,xxx,xxx,xxx,0,1,Foobar2000

foobar2000=wac,foobar2000.exe,{E7076D1C-A7BF-4f39-B771-BCBE88F2A2A8},xxx,xxx,xxx,xxx,xxx,xxx,xxx,0,1,Foobar2000

OK, back again!

This time:

Vista Ultimate 32-bit Service Pack 1
Foobar 0.9.5.6
Logitech Multimedia Keyboard 600

foobar2000=wac,foobar2000.exe,{97E27FAA-C0B3-4b8e-A693-ED7881E99FC1},xxx,xxx,xxx,xxx,xxx,xxx,xxx,0,1,Foobar2000
this code was supposed to work with vista, but I think it's for 0.9.5.5?

foobar2000=wac,foobar2000.exe,{97E27FAA-C0B3-4b8e-A693-ED7881E99FC1},xxx,xxx,40009,40044,40010,40051,40011,0,1,foobar2000

Media_Play_Pause::
{
    IfWinExist, %Foobar2000_Class%
       {
        Run C:\Program Files\foobar2000\foobar2000.exe /playpause
       }
    Return
}