Can't transfer iTunes music to iPhone

I've had my iPhone for about a year, and my Macbook not as long. When I plug my phone into my PC, which is the computer I used when I got my iPhone, it allows me to transfer music over. But, when I plug my phone into my Macbook I can't transfer music over, but it shows up as my iPhone in iTunes. When I try to drag music over it doesn't let me drop it. Is that because I first used the phone with my pc? How can I get it to work with my macbook instead?

Why does my mac Wi-Fi not working?

So i have a mac and i have Wi-Fi and every time i use my computer i can use it like for 5 min and then it disconnects from the internet. But it dosnt happen to my ipad or iphone when i'm using the Wi-Fi but if i try to use my laptop and my ipod at the same time the internet stops working for everything else even the pc's. I did get message saying someone was using my ip address so i changed the last two digits but my Wi-Fi still dosnt seem to connect properly so if i want to use Wi-Fi on my other devices my laptop has to be asleep or off or unless they won't work does anyone know why?

How to download anime music?

I wanna down load a lot of anime music to my iphone but how do i do it, is there a site to download it from or some other way to get anime music i want sadness and sorrow and all the bleach stuff and alot more

Best Otterbox case for my IPhone?

I'm buying an IPhone 4s from AT&T and am wondering what case to get with it. I have heard great things about the Otterbox, but when I look on Amazon, I see a ton of different kinds. What are the differences between the Defender, the Commuter, the Impact and the Reflex Otterbox cases? I know the Defender is supposed to have good protection but have heard its bulky. I want something that isn't slippery because I'm kind of clumsy and also want something that will hold up when dropped and protect the phone well and preferably, something that'd fit in a pocket. The pocket thing isn't an absolute must, though. But I definitely need something that isn't slippery and easy to drop and something that won't break apart and will protect the phone if I do accidentally drop it. And something that looks cute/nice would be good, too. One last thing, are the Otterboxes really all they're cracked up to be, or do other cases basically do the same thing?

How to block a number on my iphone? - 2

My ex boyfriend won't stop harassing me and sending horrible texts. Is there any way to block him? Please help. Also, I'm not going to jailbreak my phone.

Why does my iPhone constantly lose its signal?

I have Verizon (6 year customer) and have had my iPhone 4s for 1 year now, however, the past month or so I will be sitting in my house on my phone with 3-4 bars loading a page on the internet or using an app requiring data and I'll just directly go to "no service" (as noted by the small "o" in place of the "3G" icon. Not sure what it is, but my service has been abysmal lately, I've cleared all cache and website data, but nothing seems to be working:/

Editing out FOREGROUND noise on a recording

So on my iPhone, I have voice recorded my friend playing guitar, but people are talking and watching things and he's playing in the background. I would like to know if there's a way, certain programs or if someone could even possibly do it for me. How do I get rid of the voices and everything in the foreground so you can JUST hear the guitar playing in the background? He has since had an operation on his wrist and won't be able to play for a long time so I wanted to do something special for him and send him just his work on the guitar.
Please someone if you have any ideas, I would be extremely grateful!
I have tried Audacity and Sony Sound Forge, but nothing allows me to get rid of foreground talking.