Ubuntu Multimedia :: Skipping Through Wma Files Even With Restricted Formats Installed?

I can play WMAs with MPlayer but when I try to skip forward a few minutes it plays for a split second, and then plays at another random part of the video making it impossible to play a WMA from anywhere but the beginning.

Code:
mplayer -demuxer lavf ccent01.wmv.The above command opens the video but there is no menubar, scroll bar, or any reaction to right click although strangely scrolling my mouse wheel seems to randomly skip through the video. In VLC when trying to play the same file I get the error:

Code:
No suitable decoder module: VLC does not support the audio or video format "wmas". Unfortunately there is no way for you to fix this. No suitable decoder module: VLC does not support the audio or video format "MSS2". Unfortunately there is no way for you to fix this.After converting the .wma file to .mpg, and also .avi using a command similar to:

Code: mencoder ccent01.wmv -ofps 23.976 -ovc lavc -oac copy -o ccent01.mpg. There is no change playing the file with mplayer and in VLC it now only gives one error: Code: No suitable decoder module: VLC does not support the audio or video format "wmas". Unfortunately there is no way for you to fix this. I'm preparing for a Cisco exam later in the week and would like to spend tomorrow watching hours of computer based training videos but would rather not have to do it in Windows. Already tried using Media Player Classic in WINE but it crashed. Is there a workaround? Oh and I already have ubuntu-restricted-extras installed.