Ok on my lookie i have 579 words all together and i like to add some music codes but everytime when i click update and go to my lookup for a prewfiew it doesnt comes up and when i go back to see whats wrong the code it gone why is this happeningand how can i fix it?

What is the code you are using? Some people are saying a type of code isn't working, but I use the img code.
<IMG height=1 loop=infinite dynsrc=MUSIC URL HERE width=1 autostart=true>
That is the code I use. Is yours like that?