I have an application written in C# and I’m trying to play a media file from a URL to a channel using ARI and Asterisk 14 (for example: sound:<http://www.music.helsinki.fi/tmt/opetus/uusmedia/esim/a2002011001-e02.wav>), but the file is not played to the channel. 

The asterisk wiki says that it is able to do this however I have followed the example and it does not work. I have the 'sound:helloworld' example working, but cannot get it to work through a URL.