My Samsung i760 use to natively play 3gp files under WM6 and WMP. However, once I moved to WM6.1(official from Samsung) the files don't work in WMP any more. TCPMP plays the files, but only video not audio citing audio codec qualcomm qcelp not supported by the player. So I decided to install these plugins for wmp http://forum.xda-developers.com/showthread.php?t=366471 and it not work. Un-installing didn't fix it either. Is there any way to get it working like installed the WMP 6 codec and dll or something?

btw my phone takes video in 3gp so I need it for playback. thank you.