I emailed the club about this last season and the reply i got back was it was made only for the club and for matchdays, it isn't available anywhere to download or buy, so i highly doubt you can get it, only thing you can do is record the sound on a matchday then make it into an mp3
as for pounding by doves (one of the best songs ever), the version on match days is the instrumental obviously but you can't buy or dowload that either, but i have the instrumental version thanks to a certain person, sounds daft but i love it just as much as the version with vocals!!!