sheikh qardawi's opinion is disregarded because it is a minority stray opinion, though he is still a respected scholar .furthermore he gives the ruling of permissiveness. had his ruling be for impermissiveness then one may have considered it.
kindly use the search facility to read two threads: one of them mine, discussing imam ghazzali's stance on music where a modernists' claims have been refuted by ml. abuhajira, and another thread where the moulana again debates a brother called murabit. a nice conclusion to that thread.