Command line batch mode MKVMerge question

[leegomes]

I have a directory full of .avi files each with two audio tracks, one AC3 in English and one MP3 in Russian. Right now, the files default to the Russian MP3; each time I play a file, I need to manually switch the audio source in my player. I would like to remove the Russian track and leave only the English track, which would become the default. Is there a single command line command for MKVMerge I can use to do that for every file in the directory? Alternately, is there a way to use a command line batch command to switch the default from the Russian MP3 to the English AC3? (Less preferable because it wouldn't free up any disk space from the unneeded MP3s.) I obviously know how to do this with MKVMerge with single files, but was hoping for a batch solution. Also, is there a way of stipulating that the new file not contain any video or audio compression? I notice I often need to do that when I use MKVMerge if I want the resulting files to play on my Seagate Home Theater. Thanks in advance for any help.

[doncht]

Also, is there a way of stipulating that the new file not contain any video or audio compression?

You mean something like a preview? I don't think that this is a feature yet. Not sure on this though.