Your media file is still downloading, not playing in the browser.
http://radioshoom.com/audio/download/135/shoomlive-mt23032014.mp3
And testing for 'byte range requests' facility in Terminal brings up a negative result:
curl -I -r 200-300 http://radioshoom.com/audio/download/135/shoomlive-mt23032014.mp3
HTTP/1.1 200 OK
Date: Mon, 24 Mar 2014 16:00:49 GMT
Server: Apache/2.4.6 (Ubuntu)
X-Powered-By: PHP/5.5.3-1ubuntu2.2
Set-Cookie: SESSb6776a24f1e5fd2c658752fc56730b35=bs7t02ki6obfosqiptlo293vq2; expires=Wed, 16-Apr-2014 19:34:09 GMT; Max-Age=2000000; path=/; domain=.radioshoom.com
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Last-Modified: Mon, 24 Mar 2014 16:00:49 GMT
Cache-Control: store, no-cache, must-revalidate
Cache-Control: post-check=0, pre-check=0
Content-Length: 120312521
Content-Disposition: attachment; filename=shoomlive-mt23032014.mp3
Accept-Ranges: byte
Content-Type: audio/mpeg
As to your content, I'm not sure of the best way of informing the Store - probably you should put a note at the beginning of your 'itunes:summary' tag in the top section of the feed clarifying that you have clearance.