well I thought that would be enough to scare ya
I could type info for a week here and you'll still have trouble understanding how to edit the raw info.
Go get the programs I mentioned. Use the AceFTP to access your web page...useing the name and password you have... and you will find the "index.html" file that is the main page. DL that to your computer. Then using the AceHTML program open that file and use the program to edit it. AceHTML has a button to click to add music, all you have to tell it is what the name of the file is. Its easier than typing all the code that you need to play music on your webpage, even tho its only one line.
Test your page using the AceHTML program, and if it looks like you want it...and sounds like you want it, use the AceFTP program to up-load the "index.html" file and the music file you wanted, back to the site, over writing the old index.html file.
Easy enough right?