how do i burn a .mkv file to DVD?

Find some video converter like Wondershare Video Converter Ultimate to burn your mkv file to DVD, check the steps here: http://www.wondershare.com/dvd-burner/convert-mkv-to-dvd.html

I’m new to WinAVI, how do I combine multiple AVI’s to put on one dvd?

Wouldn’t it be a better idea to stream the mkv from the pc to a tv with a dongle like Chromecast ?

iDealshare VideoGo can convert 1080p or 720 p MKV to DVD format so as to successfully burn MKV to DVD for playing MKV on DVD player successfully.

Alternatively, you can convert MKV to a DVD player friendly format, so that you can play MKV on DVD player with ease. To achieve the goal, a top solution is to get Brorsoft video converter.