Problems with SOUND! (Tom Clancy's Rainbow Six: Lockdown)

If you have problems with sound in the game (wheezes, disappears, sounds incorrect), do the following:
Open the "options.xml" file
In the game folder *:Tom Clancy's Rainbow Six - Lockdowndataoptions.xml
Open with Notepad ( Notepad), find the line: useWinMM = "0"/> and change it to useWinMM = "1"/>
Sound problems should disappear!