What is the diff between 5 and the older one?

Legacy theres about 30 new features IIRC, from things like adding sounds and highlight tabs, to more options in the context menus and better permissions settings for instances etc. I don't have an exact list unfortunately.

i also get this when i prune the chat box and still cant get sound when shouts are posted

Database error in vBulletin 4.0.2:

Invalid SQL:

UPDATE user
SET dbtech_vbshout_shouts = CASE userid

ELSE 0 END;

MySQL Error : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ELSE 0 END' at line 4
Error Number : 1064
Request Date : Saturday, May 1st 2010 @ 11:05:40 AM
Error Date : Saturday, May 1st 2010 @ 11:05:40 AM
Script : http://mysite.com/index.html/ajax.ph...h_vbshout_save
Referrer : http://mysite.com/index.html/forum.php
IP Address : ***.**.**.***
Username : shadowla05
Classname : vB_Database
MySQL Version : 5.0.90-community

You're probably missing the browser plugin.

i dot think so as u can see below i have it installed on firefox
https://vborg.vbsupport.ru/external/2010/05/67.png

Fixed, re-download the zip and re-upload /dbtech/vbshout/includes/libs/shoutbox.php :)

ok thanx that fixed the Database error but still no sound with the plugin installed.

Right click and view source, then look for <embed
Just that, no ending >.

ok here is what i see
<embed id="dbtech_vbshout_sound_shout_1" autostart="false" volume="0" src="dbtech/vbshout/sounds/pop.mp3" width="1" height="1"></embed>

Is it possible to remove pm option .. dont need it nor want to use it ..

Do i need to pay to not use that option ;)