River Past QuickTime DirectShow Filter for WMP let you play QuickTime, MPEG-4(MP4, M4V), DV and 3GP video, MPEG-4(M4A) and AMR audio, animated GIF and FLC animations in Windows Media Player. It uses the native QuickTime codecs for speed and compatbility. It is often faster and smoother than the standard QT Player. No spyware or adware. Compatible with XP and Vista, including 64-bit Windows.