How Can I convert Matroska files without losing both 2 audio and 2 subs?

[shuyinliquid]

I have many .mkv files and have no problem converting them without losing video quality, but I have some .mkv files that have two audio tracks and two subtitle tracks. Here is where my problem begins.
I want to be able to convert the file to any file playable on normal DVD players or PS3, but I want to keep both audio tracks and both subtitle tracks. I know there is a way to do this I just cant find the right way to do it. No matter which converter I use I always lose one of the audio tracks and both subtitle tracks. If there was just some way to separate the video from the audio and the subtitles maybe then I could just make a new file which would definitely be playable on PS3 and/or DVD players.
I need some help doing this so please if you know how help me out.
Thank you.

[Baldrick]

Please use your first similar topic instead. Just reply or edit it to change it.