Intel Music Coder audio codec for Windows 9x and NT
Oct 02, 1999, Somebody
http://codeczone.da.ru/codec.htm

Please note that I take NO RESPONSIBILITY for any problems this fix 
might cause on your system. I have verified it on a local system and 
on a number of other users computers, but there is no way for me to 
be able to guarantee that it will work on each and every system 
configuration out there.

INSTALLATION INSTRUCTIONS
Copy the attached files to a temporarily directory (ie c:\temp). 
To install the package, rightclick on the file imcinst.inf and select 
INSTALL from the menu.

This will copy the needed files to your system directory (system32 on WinNT) 
and then update your system.ini file with the driver information 
(the registry on WinNT).

-> REBOOT <- 

You should now be able to hear sound in avi files with IMC encoded audio.