www.makemkv.com

DAR is in the MKV header and is easily edited using mkvtoolnix. However, changing the aspect ratio will result in XBMC rendering the 16:9 video stream in this custom non-square pixel ratio too. Black bars will become even larger if rendered on 16:9 display.

DASPI kext is installed in /System/Library/Extensions/daspi.kext
Thrash it. Reboot. Reinstall.

spl147 wrote:the ability to swipe between windows without having to minimize!!

Cmd+Tab?

Why? There's more important things to do besides adding (at most) 48 pixels height by hiding the menu bar and application window. What is to gain besides 1 or 2 extra lines of text?

Remove/Reinstall the DASPI kernel extension?

Most likely, your MKV contains the original surround sound audio. Multichannel sound files with lots of headroom. Windows Media Player will perform a stereo mixdown but attenuates the volume level to not risk distortion or clipping when 6+ channels of audio will saved to 2 channels. Your DVD ripped ...

I have ripped 6 Blurays so far using my LG BH10LS30 on OS X Snow Leopard.
No problems. MakeMKV is the only software able to rip all bluray discs on my Mac, other ripping softwares will fail on some discs.