Also, could you post specific details about the file(s) you're having issues playing....
Use mediainfo (http://mediainfo.sourceforge.net/en
) to get the complete set of data.
As a general note to your issue, if you're just streaming and you get stuttering, then something is up with your network. Either your network is not performing where it should be , or the file exceeds the capabilities of your network (very likely with any use of WiFi).