BBCode & BBPress 2.0? [closed]

Question

I've been trying to get bbcode working in BBPress content, using various plugins. I'm running WP (3.2.1), BuddyPress Plugin (1.2.10) and BBPress 2.0-rc-5.

I've got bbcode working in wp posts and comments via some modifications of this plugin http://wordpress.org/extend/plugins/bbcomments/

All I've done is add a few more add_action lines:

add_action('the_content', 'render_comment', 1);
add_action('the_content', 'render_comment_code', -1);

Though making the BB code work inside BBPress topics and replies is proving tricky, I've tried adding:

add_action('bbp-reply-content', 'render_comment', 1);
add_action('bbp-reply-content', 'render_comment_code', -1);
add_action('bbp_topic_content', 'render_comment', 1);
add_action('bbp_topic_content', 'render_comment_code', -1);

But no dice. I also tried calling the plugin function and the actions inside bbp-common-functions.php.

My PHP knowledge is pretty limited, so any advice on where to look next would be appredciated.