use the music control plugin (but it is not related to bgsound or background
music.)
Insert menu > web component > advanced controls > plugin
should do it then put in your data source (i.e. your music file, midi, real
audio, media player, quicktime, shockwave, flash etc etc etc). then when you view
the site is should (like for audio anyway come up with an emebeded media player
with basic "play" and "stop" functions./
otherwise, do it with javascript and here's a site that has free scripts
www.javascript.com - has scripts for controlling playing of music files.