Ming 0.3 (current cvs) allows you to embed fonts using addChars().
$t-new SWFTextField();
$t->setFont(new SWFFont("font_file.fdb"));
$lowercase="abcdefghijklmnopqrstuvwxyz";
$uppercase="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$numbers="1234567890";
$charsToAdd="$lowercase$uppercase$numbers";
$t->addChars($charsToAdd);
I'm not sure if you can use regExp to addChars?
[note-I broke the char list up due to this board's wordwrap]