HTML/CSS/Basic Attributes/volume
"volume" indicates the sound clip volume
<source lang="html4strict">
<HTML> <head> <bgsound src="yoursoundfile.wav" balance="0" loop="1" volume="-500"> </head> <BODY> </BODY> </HTML>
</source>
<source lang="html4strict">
<HTML> <head> <bgsound src="yoursoundfile.wav" balance="0" loop="1" volume="-500"> </head> <BODY> </BODY> </HTML>
</source>