[lavaman]

If your computer is a 64-bit Operating System and your sound is not working then this guide may help.
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Steps:
Step 1- Open the Start Menu and right click Computer and select Properties.

Step 2a- Look under the System section and look for something that says "System type:".

Step 2b- If it says anything other then "64-bit Operating System" this guide is not for you.

Step 3- If it says "64-bit Operating System" then go to your Graal folder and go into "game_config".

Step 4a- Find the line that says "tryloadsoundson64bit=true" or "tryloadsoundson64bit=false" (Searching with Ctrl+f helps).

Step 4b- If it says "tryloadsoundson64bit=true" then something else is wrong, if not keep reading.

Step 5- Delete only the part that says "false" on that line and replace it with "true".

If you where able to follow all these steps and it still does not work, there is something other then this wrong.
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Credit goes to Chompy for telling me how to fix this about 2 and a half years ago, after explaining this a few times I decided to post it up on the forums.
Hopefully it gets sticky.