It's so hard to be in between!!!

I feel so hard to be in between of my friend's misunderstanding!!!...I will just name them as friend A and B...they are not mean women but there are just dislikes for each side..My friend A, is very friendly, fun to be with, so devoted to her family, so easy to make her smile, she live like a queen, and she share her blessings to her family alot...and my friend B, is very religious, simple, so quite, so humble,she is happy to help other people, and she does everything that can pleases her man...My friends are both HAPPILY MARRIED...
Now, my friend A have a house close that is close to the house that my friend B is renting. At my friend A's house her sister and the husband is the one lives there which is close to my friend B. The husband of my friend B complained about the brother in law of my friend A because everytime he listen to music he turn the volume really high and its really loud and it irritates him. So, as a wife, my friend A supports her husband, they complain it to the security guards and to the owner. She called me the other day and let me know about it..She said that the bro in law of my friend A even through to their house the Disc's that her husband gave him. She asked the number of my friend A coz she would like to inform her since she's the owner of the house where the guy lives. So, she sent her a message and so on...And my friend A called me, she said that my friend B complains about the simple things. She also said that she wont blame her bro in law for he have just fun. She said there is no big deal about it for it is just normal for the people who would listen to music, and it's ok that it is so loud anyway it is still morning for she knows that the curfew is 10pm. Then, if it is 10pm she will say something to her bro in law..But she said she dont care if my friend B dont like it..She also said that they will do whatever they want to do for they are free to do such things...
I didn't say so much I just told my friend A that the husband of my friend B just dont like loud music. But she still said that it's unreasonable for them to complain. And her sister will confront my friend B...I am sooo speechless.. for they are trying to make a bridge of their war..and I dont wanna be their bridge for I think that if ill be their bridge im gonna loose one of friend and they are both so good to me..So I better stay quite..But im more for my friend B though for they just do what's right..And I think my friend A and her side just use their pride..And it is not good if you dont humble down..
Right now my friend B and her husband went to the province to take a deep breath and they will come back for they will see the bro in law of my friend A in the Brgy. Hall to settle down..Hope that this issue will get resolved very soon.