Advertisements I got a Zen Portable Media Player from the rewards program but I am having problems getting Windows Media Player to sync .tivo files. It can get one or two programs to convert and then I keep getting "one or more codecs required for conversion" error when i try to do any more. I have run the Windows XP Video decoder checkup utility and have set the default to an approved codec(Intervideo) but when I check properties it still shows it using the Ligos codec. I've checked the web and MS website and I can't find how to change the codec. All I've read says it should be automatic, but it doesn't seem to be working. BTW. I have NO problem playing back any of the files on my desktop. ANY IDEAS?