The Mudbomb editor is the tiny MCE editor from Moxiecode.
To add buttons you need to edit the calling code. Detailed documentation is available on the moxiecode site. https://tinymce.moxiecode.com/tinymce/docs/index.html
If you have implemented the mudbomb plugin, then the calling code is in wordpress.js under wysi-wordpress in the plugin folder.
Example:
tinyMCE.init({
mode : “exact”,
theme : “advanced”,
language : “en”,
plugins : “imagebrowser,dictionary”,
theme_advanced_disable : “strikethrough,visualaid,anchor,zoom,table,row_before,row_after,delete_row,separator,col_before,col_after,delete_col,bullist,numlist,outdent,indent,undo,redo,link,unlink,anchor,image,cleanup,help,code,preview,sub,sup,separator,charmap,removeformat,visualaid,hr,bold,italic,underline,justifyleft,justifyright,justifycenter,justifyfull,cut,copy,paste,forecolor,backcolor,styleselect”,
theme_advanced_buttons1_add : “bold,italic,underline,strikethrough,removeformat,numlist,bullist,outdent,indent,justifyleft,justifyright,justifycenter,justifyfull”,
theme_advanced_buttons2_add : “link,unlink,separator,imagebrowser,image,separator,dictionary,separator,cut,copy,paste,separator,undo,redo,separator,code”,
relative_urls : false,
remove_script_host : false,
theme_advanced_toolbar_location : “top”,
theme_advanced_toolbar_align : “left”,
theme_advanced_resizing : true,
theme_advanced_path_location : “bottom”,
extended_valid_elements : “a[name|href|target|title|onclick],img[class|src|border=0|alt|title|hspace|vspace|width|height|align|onmouseover|onmouseout|name|style],hr[class|width|size|noshade],font[color|background]”,
elements : “content”
});