Can anyone recommend the program(s) needed to import x264 mkv files into Sony Vegas? I believe I used StaxRip in the past but have not been able to get it working. Maybe the settings are off but I've tried several times and used a couple guides.

What I'm trying to do is make a video compilation with several music videos that are currently x264 and in .mkv format. Whether I demux them and am able to import them into Vegas or have to convert all of them to avi or something doesn't make much difference to me.

Thanks for the help.