I need to convert a .MKV/.MD5 anime files to burn on a Mac DVD; help?

[Certix]

I have downloaded an anime film, but it is in a .MKV file; the subtitles file is probably the .MD5 file that came with the package.

However, I am on a Mac; so I have tried moving it to my Windows XP laptop, but I need a converter to convert the movie into a AVI (or better) format to then burn onto a DVD on my Mac.

Does anyone know of any good, bug-free movie file converters that will do the job of converting file formats, NOT burning? I will ignore vague/stupid answers, that include 'Don't use a Mac!' or 'IDK'. I am asking for help, not to analyse OS.
Edit: For the stupid people- I have already downloaded the file.

[gsmltd89]

when you go to download the file, do a save as and once that window pops up you should be able to change the extension file right there, worked for me

[g101]

Try iskysoft dvd ripper for mac, I hope it can help you!
http://www.iskysoft.com/dvd-ripper-mac.html