What do you say

I've been wondering if any of you have heard of/to the Qadri's naats. What is your opinion on their singing tactics? I've listened to many of their naats, my sis specially, downloads all their latest nazams. However each one after the other seems to be more "music like". Let me explain, one will sing the naat and behind there will be: "Allahu-Allah", "Allahu", or some other Zikr... but.. Theres an emphasis in such a manner that it mimics the "doof doof" in music (what ever its called:?). Now, not all are like this but as i said the latest ones are. My question will be, is it permissible to listen to any of their naats, as some sound rather too much like music while others dont? Or is better perhaps not to listen all together?
P.S if you'll havn't heard of them i'll put down a link where you can listen.

Anyone?...
......Or did i post in a wrong section?
Anyway heres some link where you can listen to some naats.
http://www.muhammadiya.com/tahirqadri.html
http://www.muhammadiya.com/owaisqadri.html

See the diff between the old and latest albums.
Let me know what you think. I personally want to give up listening to them.