Yes, Woppy, it's standard HTML. The QUOTE and IMG tags that this site supports are really not HTML, but are keywords that get converted to HTML. I thought [LINK] was a similar replacement keyword/tag, but it isn't. So I dropped down to raw HTML.
It does work, and if I wanted to get the syntax right we could even make it popup in a new window. For that you simply add the following: target="_blank"
As in:
[a href="http://www.zjstech.net/~library/21386/inside 50 series.wav " target="_blank"]Inside 50 Series[/a]
Testing (replaced [ and ] with less-than and greater-than):
<a href="http://www.zjstech.net/~library/21386/inside 50 series.wav " target="_blank">Inside 50 Series</a>