Safari not playing embedded midi music clips

I recently noticed that embedded midi music clips in Apple Mail and in Safari do not play. Basically, I am referring to background music one often hears while going to some web sites. Particularly those individual web sites folks have created. Of course, many on this forum, who have never been a Windows user and specifically, Internet Explorer, probably never realized there even was any background music.

This is not necessarily a issue for me, but it is for my Mom ,who, along with many others her age, like animated graphics and music in their emails and web sites.

I still can't believe Apple Mail and Safari can't auomatically play embedded midi files. Especially given that Internet Explorer and Outlook Express can.

Many one option is using Firefox and Thunderbird for a Mac?