adding mime types for braille documents

[kendell clark]

hi all
I'd like to add mime types for braille documents (*.brf and *.brl)
files. I've generated a test braille file using liblouis's lou_translate
tool, which I can attach if wanted. It reads, This is a test of a
braille document. Testing, 1, 2, 3. I can file a bug against the shared
mime database if needed, but I seem to be stuck on the last bug I filed.
I'm not really clear on what I need to do to get new mime types
accepted. I've read the hacking file but I don't really understand it. 
I've checked out the shared-mime-database git repository and I'd be
happy to put my test braille file in the tests folder, but I don't know
how to run the tests against it since braille documents are nothing more
than text files with braille in them as opposed to print, so there's no
standard or anything. Can anyone help me?  In fact, if braille documents
get their own mime type, they'd be a subclass of text files. I'm still
trying to add mime types for audible and enhanced audible files, but I
don't know how to generate test audible files. There doesn't seem to be
a library that will generate them. I can take a preexisting audible file
and remove the audio from it, but I'm not sure how to do that. Sorry for
all the questions, I'm new to the world of mimetypes, magic numbers, and
so on. If  there's pre existing documentation, point me to it and I'll
read it and get out of you guys' hair. I don't want to be a bother but I
do want to improve linux, and the mime types available for it, which is
why I joined this list.
Thanks
Kendell Clark