To the OP.
I listen to rap music, play violent video games and watch a lot of horror films. It does not make you a better or a worse Christian. No where in the Bible did Jesus take a stand on wether or not Modern Warfare/GTA was acceptable/biblical.
What we have today, in a lot of churches, are a bunch of well meaning idiots who think legalistically cutting out whole swathes of stuff THEY percieve to be "ungodly" is helpful or beneficial. Its not, its an ego trip for the person doing it, its elevating their preferences to the level of God's law. Its ok to have preferences, I happen to despise indie music and cricket. What I can't do is pull some BS statistic out of my backside and say "well, this says that cricket is wrong, so cricket music be ungodly because I don't get anything from it and percieve it to be satanic".
One of the most awkward experiences I ever had in church was over rap music. I love the band G Unit (which is 50 Cent's band). And I was sat in the front row with a snap back hat, G unit t shirt and air-force 1s on, and had to listen to the pastor rant about how evil rap was for 15 minutes. And what was telling was that this guy did not have the first clue what he was talking about. Preferential arguments based on BS and steriotypes is what you get in church when this sort of thing is discussed. Same thing when people like Jack Chick talk about D&D or Roleplaying or Warhammer or GTA or Metallica.
Like everyone is saying, there is freedom to do anything, but there is a responsibility to do only that which is beneficial. However, who is the better arbeiter of what is beneficial for your relationship with God? The Holy Spirit or some randomer in church? Maybe violent computer games are harmful for their relationship with God, it doesn't necessarily mean they will be harmful for yours. And I say that because, lets be honest, the Holy Spirit is far better at leading you to be the person Jesus calls you to be, not mindless herd mentality legalistic crap based on half truth and steriotypes.
As an example, you may be aware that there is a programme called "Spartacus: Blood and Sand" from HBO. Very violent, I thought I would love it. However, after watching it, I felt truly grieved and felt the Spirit lead me not to watch it again. Ditto with UK sitcom "The Inbetweeners" and all anime. I've not felt grieved about stuff like, say, Southpark or Call of Duty or Rambo.
Acts 15:10-11 says " Now then, why do you try to test God by putting on the necks of Gentiles a yoke that neither we nor our ancestors have been able to bear? No! We believe it is through the grace of our Lord Jesus that we are saved, just as they are.” In other words, if Peter says that faith in Christ is enough, and Jesus says that faith in Christ is enough, who is someone to say to you that you need Jesus and to legalistically avoid certain games and films?
What you do need is to ask the Holy Spirit to grieve you of anything that isnt helpful, and it is a refining process, and it may be that certain things are helpful for a time and then become unhelpful, or that as you grow closer to God, things just slide off you, but it is a refinement process led by grace and faith, not by mindless avoidance for the sake of it.
/rant
Calling your brothers and sisters in Christ idiots for disagreeing with what you entertain yourself with is the direct evidence that these things are a bad influence on you.
I typed in "50 cent lyrics" and clicked on the first song that came up. Do you honestly believe the Holy Spirit approves of you listening to this garbage?:
www.azlyrics.com/lyrics/50cent/toallmy[bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]s.html
From "To all my [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]s"
We the realest [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]
50 Cent and B.I.G. my [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]
Don't try to act like you don't feel a [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]
Biggie yo [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse], 50 yo [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]
Squeeze the trigga' leave a [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse] fa' sho!
"Back up chump, you know Biggie Smalls grips it quick
And kicks it quick, you know how black [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]s get
With the hoods fatigues with the boots with trees
Smokin weed, flippin ki's, makin crazy G's
Hittin' buckshots at [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]s that open spots
On the avenue, take my loot, and I'm baggin you
Pimpin hoes that drive Volvo's and Rodeos
Flash the Roll, make her wet, in her pantyhose
Damn, a [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse] style is unorthodox
Grip the glock, when I walk down the crowded blocks
Just in case a [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse] wanna act out
I just black out, and blow they mother***** back out
That's a real [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse] for ya"
The title, and around half of the song won't even show up here because of the curses, and the other half wouldn't show up either if the filtering were smarter. This is from Satans lips to your ears. You might want to ask yourself why you are entertained by what glorifies Satan instead of what glorifies God.