I've gone through the latest download (0.7.2) and have been reading
through various sound/audio posts here and on the Wiki, but am
stumped.

What I'm trying to do is generate a simple sound on a web page, which
works great everywhere but on the iPhone (it always wants to use the
QuickTime player). So I've been looking into a JavaScript method to
generate sound on the iPhone. All I want to do is "play sound
XYZ.wav".

After diving into QuickConnectiPhone, I discovered PhoneGap, and have
been very encouraged by the simplicity of design (not having an entire
framework included).

But... I cannot figure out how to include the simple javascript
Device.playSound('XYZ.wav'); call because I am unclear as to how to
set up the rest of PG (the PG Class folders, etc.) In fact, I'm
slightly confused as to whether or not I can do this at all without
having to build a custom iPhone app using XCode.

So my question is two-fold:

(1) Can the PhoneGap API be called from the iPhone using only
JavaScript (i.e. from a web page in Safari on the iPhone), without
having to build an actual iPhone App?

(2) If it can, is there a working example of how to set up the folders
on the server with any path substitution (e.g. replace SOURCE_PATH
with your URL) indicated?