Still can't get mplayer to play Car Talk!

[Adam Funk <a24061@yahoo.com>]

As I mentioned in a previous post, I'm using the current unstable
version of mplayer-k6 from ftp.nerim.net and all the relevant packages.

When I try to play Car Talk with mplayer, it caches but then dies with
this error:

Clip info:
 name: Car Talk 0445-Segment 1
 author: Car Talk
 copyright: (C) 2004 Dewey Cheetham and Howe
==========================================================================
Trying to force audio codec driver family libmad...
Cannot find codec for audio format 0x6B6F6F63.
Read DOCS/HTML/en/codecs.html!
==========================================================================
Audio: no sound
Video: no video


Exiting... (End of file)


My /etc/mplayer/codecs.conf contains the following lines:

audiocodec racook
  info "RealAudio COOK"
  status working
  format 0x6B6F6F63 ; "cook"
  driver realaud
  dll "cook.so.6.0"

audiocodec racookwin
  info "Win32 RealAudio COOK"
  status working
  format 0x6B6F6F63 ; "cook"
  driver realaud
  dll "cook3260.dll"

audiocodec racookmac
  info "Mac OS X RealAudio COOK"
  status working
  format 0x6B6F6F63 ; "cook"
  driver realaud
  dll "cook.shlb"


The cook.so.6.0 file exists on my system (/usr/lib/win32/cook.so.6.0:
ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), stripped)
but not the other two.

What do I have to do to get mplayer to find and use this codec?!  (It
used to work and mysteriously stopped a few weeks ago.)

Thanks,
Adam