jpl_dm2.zip containst Java classes for a player that can play VGM files.
The archive comes from:

http://www.ila-ila.com/xvd-hist/sites/lab1454/eng/products/jpl_dm2.zip

Applet usage in the accompanying HTML page looks like this:

        <applet name="Player"
                code="PlayerDM2.class"
                archive="jpl_dm2.zip"
                width=250
                height=250 VIEWASTEXT>

        <PARAM NAME="File Name" VALUE="cruise48.vgm">

        <param name=clickURL value="http://www.lab1454.spb.ru">

        <param name=initImage value="1.gif">
        <param name=lastImage value="2.gif">
        <param name=AutoStart value="true">
        <param name=ShowSlider value="true">
        <param name=ShowButtons value="true">
        <param name=ShowStatus value="true">
        <param name=showFirst value="true">
        <param name=InitBufferingTime value="5000">
        <param name=BufferingTime value="3000">
        <param name=videoBufferSize value="10">
        </applet>