All you have to do is reference the JSyn Applet using the HTML APPLET tag. Here is an example using an Applet called "TJ_Beep" that is in a Java package called "mystuff". The CODEBASE is an optional parameter that tells the browser to look in another directory for the classes. In this cases it says to look in a folder called "classes" that is two directory levels above the HTML file.
<APPLET CODE="mystuff.TJ_Beep.class" NAME="TJ_Beep" CODEBASE="../../classes" WIDTH="200" HEIGHT="100"> </APPLET>
For the text of complete HTML file that incorporates all these features, click here.