No sound in some AVI videos problem correction

Sometimes I get some AVI videos that my K-Lite Codec Pack couldn't synthesise its sound. I realized that uninstalling the Codec Pack the sound would work (but the video not). After a series of trials I found the solution: With the codec pack installed, during playback, a couple of icons will appear on the system tray. Double-clicking the FFa icon will give you the ffdshow audio setup window, and its right panel will have MP3 as the first line, you shall change its Decoder to mp3lib to solve the no-audio problem.