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AudioJS, jQuery Not allowed to load local resource

I know there are similar questions, but I could not find one explaining what I am trying to do.
At one of the events I will be working, the MC will need to play music from his browser (it has been set up like that to update all live schedules).
The problem that I have is I get the Not allowed to load local resource error when I try to load the audio file from the local drive.
The reason I am trying to load the file from the local drive is for in case the network fails or something happens to the local server, then the event can still continue.
I have read that Chrome gives this error for privacy and security reasons, but Firefox does not load the file and gives no error for doing so.
Is there a browser where this will be possible or is there a way to change browser settings to allow this?
I have tried using the Flash settings to add the file's location as a trusted location, I am however unable to find a flash settings that says "Load from local disk (only)".
Thanx in advance.

No, it's not possible to load files from the local machine for security reasons. Imagine what I could read from your machine if it was >:D
You have to run your code on a web server, and also host the file there. You can easily install IIS if you're on Windows as it's included as an additional component. There's also XAMPP which is free.

Chrome Dev Tools - Mapping network resource to local file not working

Is Local file mapping dev tools alternative to Charles proxy in firefox? I am trying to map a remote server resource to a local file, but it doesn't seem to be working. The console statements and changes in the JS file doesn't seem to be applied when I reload the page.
I can see the local folder and file listed in the sources folder. Also, see that the sources doesn't show the original JS file. But I see this message in the sources tab for the local file.
Workspace mapping mismatch
Rest of the warning states that the file in local folder is different from the remote loaded file. Why is that a problem, wouldn't that be always the case, since you want to edit the file locally?
What am I missing? Any pointers to fixing this? Is my assumption wrong that this feature in chrome dev tools can allow loading a resource locally, as if it was loaded from the original location?
I tested this again with a simple html page with a single js file having a simple console log statement - "loading remote file ...". This file is mapped to a local js with a different log statement "loading local file.." However, I still see the log message from the remote file.
Added snapshot from dev tools sources tab for more context. Sources tab shows the local folder and file correctly, but shows the mapping warning. Also notice that sources doesn't have the remote.js file anymore.

Is my assumption wrong that this feature in chrome dev tools can allow loading a resource locally, as if it was loaded from the original location?
I don't think this is accurate. When you map a file on a server to your local workingspace, Chrome acts as a sort of editor for your local files. You can edit the files through Chrome and Command+S to save your local files. But nothing has changed on the server. It doesn't update the files on the server, and it doesn't tell Chrome to "Use my local files instead of what's on the server".
What many people do is automate the deployment process so that when a local file is updated (either through Chrome + Workspace Mapping or just simply by editing in your editor), your working copy gets deployed. That way, next time you reload the browser, you'll see your edits.
Edit: From the workspace documentation:
And you can map resources served from a local web server to files on disk, so when you change and save those files, you can view them as if they were being served.
I think the key here is local web server. I did a bit more digging and found this dev tools docs issues, with a comment effectively saying that what you're trying to do isn't supported:
The DevTools currently does not do resource substitution. It can simply map the remote files to your local copy so if things are kept in sync (like using a local server on-system) then when refreshing your modifications can persist.
Looks like you'll need a way to deploy after making changes or have your devtools workspace point to the server docroot.

The Charles Proxy "map local" feature was requested of the Chromium team in this issue and the team declined to pursue it.

AJAX Request Won't Work on Internal Server

I'm using w3schools to try to understand how simple AJAX requests work and I came across this exercise page:
http://www.w3schools.com/jquery/tryit.asp?filename=tryjquery_ajax_load
I thought it was a simple example of an ajax request, so I copied and pasted the code into a plain ajax.htm file and copied and pasted the txt file it refers to:
http://www.w3schools.com/jquery/demo_test.txt
...and saved it as demo_test.txt file it refers to and saved them both in the same folder. (Keep in mind, I have an Apache server that processes PHP locally with no problem, so I would think a simple request like this would work on my local machine).
However when I click the button locally I get nothing. Then, when I upload the files to a different server (a "web host") suddenly it works.
So, this works on a webhost and it works at w3schools but it doesn't work locally on my machine in my root folder (where php works without a problem).
I would prefer to not have to upload my code before being able to test whether it works and would rather be able to process everything locally, like I do with PHP. Is it possible to do this locally or can I only make these requests remotely from my web host?
Why is my machine not processing this code? Any help would be appreciated. Thanks.

There are a lot of reasons you might not be able to load the file locally, but most will have to do with how you're serving the files. If you're using file:// you're going to run into problems; you said you have an Apache server, but didn't mention whether you were actually serving this site from it.
Have you checked to make sure that the route you're loading via your AJAX call is actually loading properly? E.g. if the ajax file is at your web root (http://local.site/ajax.html) and so is your txt file (http://local.site/demo_test.txt).
In this situation you can also always check your browser's Javascript console to see if you get any errors or if the files are actually loaded correctly. Depending on how you're serving and accessing the various files, you might be getting CORS errors as well.
The simplest solution is to make sure you're running on a local webserver (your Apache) instead of directly viewing files.

javascript not working on localhost

Ok so I'm lost here, frustrated and pulling my hair and out. Plus probably about to be fired or take a pay cut.
I moved Files from a development server to my local machine. The files are consistent (used diff tool), all the dependencies are there. It works for the most part. The problem is that the some of the javascript (not all) is just not working. We're using jquery and a lot of plugins for it. I've checked with the web developer plugin in firefox and all the js files are loading. I cleared the cache in both firefox and chrome multiple times to no avail. The development server is a windows server running wamp. My local machine is running ubuntu. Somebody tell me what I missed.

Download firebug as a Firefox extension and view the http request and responses.
Easiest may be from within the 'net' tab to determine if your script is making a request.
Very likely that it is a source domain issue. There are no work-around for this issue. The ajax request and the source data must be on the same domain.

It may have something to do with JavaScript's security limitations. (In certain circumstances) You can only operate on URLs or pages from the current domain, which most likely changed when you moved the files off the other server. More here.

Are you running the files via a webserver, or just opening the files directly? If it's the latter, you'll want to set up a server on your local machine for local testing, and serve the files using it. Otherwise, you'll very likely run into the domain restrictions others have mentioned above.

You may need to host the site using a local server. VS IDE has an add-on called live server. You need to set up a workspace in order for it to work. The port used on my machine was 5500.
You need to make sure any dependencies for javascript are running on your server or the javascript will not be executed. These dependencies are listed in the json file.
ex. If you require express, you need to be running node or the javascript won't execute in your web browser.
In the terminal:
node app.js
Any dependencies that are not installed and running on the server will not execute.

Are you accessing the html web pages through the webserver and not simply double clicking the file to open it?
Also if you have WebDeveloper toolbar installed the click "Disable", "Disable Javascript" and make sure "All Javascript" isn't ticked.

Why don't Django admin "Today" and "Now" buttons show up in Safari?

I'm developing a Django application that contains a model with a date/time field. On my local copy of the application, the admin page for that particular model shows this for the date/time field:
alt text http://www.cs.wm.edu/~mpd/images/bugs/django-date-local.png
This is as expected. However, when I deploy to my webserver and use the application from there, I get this:
alt text http://www.cs.wm.edu/~mpd/images/bugs/django-date-server.png
The application on the server is exactly the same as my local copy, except that I have debugging disabled on the server (but I don't think that should matter...should it?). Why does the admin app on the server differ from the local admin app?
Update
The issue seems localized to Safari. The "Today" and "Now" buttons appear when the admin site is accessed via Firefox. It looks like Safari can't download some of the JavaScript files necessary to show these widgets (strange that Firefox can, though).
I noticed that Safari is receiving a "304 Not Modified" code for the following files, but I'm not sure what that means, or how to fix it. Obviously, these are the JavaScript files and images that control the date/time widget:
RelatedObjectLookup.js
DateTimeShortcuts.js
icon_calendar.gif
icon_clock.gif

I think you have to look at what is different between your firefox configuration and safary config
Off the top of my head:
One could be configured to use a proxy (messing with the trafic) the other not. Make sure the configuration is the same in both.
Safari could have cached the error clear the cache before testing again.
Try to access the gif files directly from the browser (by inputting the full url of the images) and run wireshark on the wire comparing both GET requests and responses. Something WILL be different that will help you to track the problem.

If you're getting 304 on those files. Flush your browser's cache and try again.
If it doesn't load again anyway, make sure you are getting 200 OK.

It seems like you have admin media missing (hence js and images aren't loading). I generally do following.
in settings.py
ADMIN_MEDIA_PREFIX = '/media/admin/'
Then I symlink path of django.contrib.admin.media within my media dir. Say:
ln -s /var/lib/python-support/python2.5/django/contrib/admin/media/ /var/www/media/admin
Development server serves admin media automatically. But on production servers one generally prefers to server static stuff directly from apache (or whatever server).

Check the media location, permissions and setup on your deployment server.
http://www.djangobook.com/en/1.0/chapter20/

Have you tried checking out firebug's NET tab to see if the admin javascript/css/image files are all loading correctly?
I had that problem once.
Compare all those files from the dev server against the production server.