How to delete songs of ios7?

Right, I downloaded ios7 on my iPhone5 when it came out and I got heaps of songs from my computer on my old iTunes account randomly on my phone whenever I was on my Wi-Fi at home. The ones I wanted I tapped and put on my phone but now I don't want them. How do I delete them? If I try the normal way it won't let me Help!

IPhone 4S no sound with music?

My speakers are fine, calls make noise and some apps make noise, phone is not on mute. If I try and listen to music it says it's playing but you her nothing, this includes YouTube and my music from my library and any other music apps. Happened randomly, I was listening to music, paused it to go to the washroom came back and it didn't work. I've restored to factory settings, and still same story. If I plug headphones or speakers into my phone it works.

Why does my verizon iPhone 5S not say 4G?

Okay so I got the iPhone 5S with verizon and when I'm not on LTE it says 3G. But I've noticed with my friends iPhone 5's that are on AT&T their phones say 4G when there's no LTE. Can I fix this

Which one of these is easiest to learn. (app development)?

Javascript and HTML (no server, just open HTML file directly in the browser)

Objective C and Xib (iPhone app)

Java and XML (Android app)

C# and XAML (Windows desktop app)

It is for a project. I have a working board game (text based), which I have written in C++(the only language I currently know.) The code which I have written includes multiple.cc, .h files and multiple classes.

Now I have to convert it into a working app with graphics in any of the above languages. Declarative interface in the second language i.e. XAML XML HTML.

Please guide me and help me choose one option (which has most similarities to c++) keeping in mind C++ is the only language I currently know.

Called the cops (unreliable) need public assistance?

A weird situation happened to me this morning and I need somebody's help that knows what they're talking about. I was sleeping and my mom comes into the room and wakes me up saying she got a phone call from some random number with a voice recording of my exact voice pretending to be me. Note that the voice was exactly my voice so it was a voice recording that must have only been recorded by tapping into one of my phone calls. Somebody's clearly out to get us, it must be a scam of some sort.
I called the cops told them that exact story and they said they couldn't track the number since the guy didn't "threat" me, I ended up filing a report and we called it "harassment". Now when I tried to call the number back, I realised that it was a "textme" app phone number. So the person was calling from an iPhone/Android "textme" app and trying not to be caught. I tried making an account on it and searching the number but couldn't find the scammers account so he either deleted it or i don't know.
Anyways it would help if somebody here can answer me one of these questions:
1.Is there any possible way to get this person in trouble for something other than harassment?
2.Is there any possible way to track this number? I have the exact time the person called and the phone number (it wasn't private) even though it was an app phone number.
Thank you for your time everyone

Added (1). 3. This also means that my phone may be tapped, anybody know a way to get rid of that or check if it is?

How to know from where the tweet is tweeted?

How people come to know that the tweet is tweeted form android/iPhone/any other device? People on tumblr/facebook post screenshots of the tweet and sometimes besides the date it's written 'via android' / 'via iPhone' but when i see the original tweet on twitter there's no specification?

My iPhone 4 has stopped working?

Ok i have an iPhone 4 and it has been working perfectly fine until now! I types in my IMEI number and then it totally froze. So my phone is frozen on my IMEI number on my iPhone 4! Please help me I have tried to turn it off i have plugged it into iTunes. What else should i try and do?