Error with Travel Routes?

I stumbled upon your plug-in and (I think) it has all the functions I’m looking for: the ability to tag locations on a map, plan a route and a live search for locations – all on a WordPress page or post (correct me if I’m wrong).

I activated the plugin, and tagged my locations in a WordPress post, but when I clicked Publish, it gave me this error:

Warning: file_get_contents() [function.file-get-contents]: http:// wrapper is disabled in the server configuration by allow_url_fopen=0 in /users/foodie-tour/www/wordpress/wp-content/plugins/travel-routes/admin.php on line 145

Warning: file_get_contents(http://maps.googleapis.com/maps/api/geocode/json?latlng=52.508637,13.461006999999995&sensor=false) [function.file-get-contents]: failed to open stream: no suitable wrapper could be found in /users/foodie-tour/www/wordpress/wp-content/plugins/travel-routes/admin.php on line 145

Warning: file_get_contents() [function.file-get-contents]: http:// wrapper is disabled in the server configuration by allow_url_fopen=0 in /users/foodie-tour/www/wordpress/wp-content/plugins/travel-routes/admin.php on line 145

Warning: file_get_contents(http://maps.googleapis.com/maps/api/geocode/json?latlng=52.511122,13.461443000000031&sensor=false) [function.file-get-contents]: failed to open stream: no suitable wrapper could be found in /users/foodie-tour/www/wordpress/wp-content/plugins/travel-routes/admin.php on line 145

Warning: Cannot modify header information – headers already sent by (output started at /users/foodie-tour/www/wordpress/wp-content/plugins/travel-routes/admin.php:145) in /users/foodie-tour/www/wordpress/wp-includes/pluggable.php on line 876

Any insight into what I’m doing wrong? Do I need to download the Google API? If so, where do I exactly place it?

http://wordpress.org/extend/plugins/travel-routes/