A quick and simple change to increase the limit on the size of uploaded files.
The file to be edited is .htaccess, (note the preceding dot) located in the root of your website.
To set the maximum file upload size to 64MB edit the .htaccess file adding:
php_value post_max_size 64M
The file can be edited either via FTP and an HTML editor, or possibly through the control panel associated with the domain hosting.
For me this was a WordPress installation on my development computer I was able to make the change using the terminal.
