I was Windows user ,and I usually watch mp4 video using gom player for 3.5 speed play mode with keeping tune. And , I have used MAC OS 10.8.4 since two weeks ago. So, I want to use gom player in Mac. But, Gom player can't keep tune when speed play mode. I tried to play using VLC player and MPlayerX and QuickTime7.X, but these player is not better than gom player in Windows for tune. Please tell me player that have speed mode(3.0 or higher) with keeping tune. I wish freeware.