WMV file with Windows Media Audio 9 plays with no audio

[K7AAY]

I can play a video on XP, but there's no audio in Lucid. The hardware is a Lenovo SL400, 2GB RAM, 7200rpm drive w/ 36GB free, and an Intel T5870 Core 2 Duo 2GHz CPU.

Media player and Banshee fails to play the video with the error message
No packages with the requested plugins found
The requested plugins are
Windows Media Audio 9

Avidemux crashes when I try to open the 6.3GB file, which I can play with audio AOK in XP.
Assert failed :_offset<=pakSize
 at line 352, file /build/buildd/avidemux-2.5.2/avidemux/ADM_inputs/ADM_asf/ADM_asfPacket.cppADM_backTrack
asfPacket::pushPacket(unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int)
asfPacket::nextPacket(unsigned char)
asfHeader::buildIndex()
asfHeader::open(char const*)
ADM_Composer::addFile(char const*, unsigned char, fileType)
avidemux2_gtk() [0x809a16f]
FileSel_ReadWrite(void (*)(char const*), int, char const*, char const*)
avidemux2_gtk() [0x81ae352]
GUI_FileSelRead(char const*, void (*)(char const*))
HandleAction(Action)
guiCallback(_GtkMenuItem*, void*)
g_cclosure_marshal_VOID__VOID
g_closure_invoke

g_signal_emit_valist
g_signal_emit_by_name

g_cclosure_marshal_VOID__VOID
g_closure_invok

Mplayer tells me
Fatal error!
Error opening initializing the selected video_out (-vo) device.

VLC says
No suitable decoder module:
VLC does not support the audio or video format "wmap". Unfortunately there is no way for you to fix this.

Mediabuntu is installed in Sofware Sources. I uninstalled it, then reinstalled it. I also disabled, then reenabled, 'Software restricted by copyright or legal issues (multiverse)'; no joy. Also uninstalled then reinstalled Mplayer and Smplayer, to no avail.
Did both repository install as per https://help.ubuntu.com/community/Medibuntu#Adding%20the%20Repository
and also
sudo apt-get install w32codecs

Your generous assistance with this vexacious problem is appreciated.
Thank you kindly.