Firefox getting error loading sound from server

Question

I'm using the following code to load some 30 sec soundbytes
from a server. Safari works without error most of the time. When it
fails it gives me a "webKiterrorDomain" message.
Firefox just won't load anything ever.
None of the 10 soundbytes refuse to load all the time with
Safari. And the order in which I click on them doesn't seem to
matter. Any at random will probably will load but 20% chance it
might not.

Answer 1

This is what I tried at the very first. It didn't work well
so I tried the totalBytes / getBytes thing which seemed to work
better. Then, because it didn't always work, I thought that perhaps
there were times when the total bytes didn't exactly equal what was
downloaded (can this be true?). So I gave it a range of error of 10
bytes by using the Math.abs() difference between the two. This
worked okay but still not always. Currently, the first click, after
clearing the cache in Firefox, usually doesn't play the sound.
Clicking the same mc again usually does play the sound. Sometimes
if I click sound "A" (doesn't work) then I click sound "B" (doesn't
work), then I click "A" again it works. Sometimes clicking "A"
twice (works) then click "B" once (works). Other sounds might work
on the first try but often the first click on an mc after a cache
empty will fail.
When I used the
IF (success) {
my_sound.start();
earlier I found that this sometimes never got to be true. I
found this complaint elsewhere on the Internet.
Is this a Flash bug or browser bug? Safari is inconsistent as
well but yields a "webKitErrorDomain203", though perhaps for a
totally unrelated reason.. don't know.
Anyway.. any work around would be appreciated.
If you want to check it for yourself go to:
http://www.laurasiersema.com
then navigate to "music"
thanks, chop