Why can't I download new music to my iPhone 5s?

I downloaded the most recent software for the 5s and now I'm having trouble putting new music onto my device. I use a youtube to mp3 converter and the music goes directly on my iTunes. It is allowing me to play the music through iTunes, but every time I try to put it on my iPhone it says it is updated but skips right over the song when I click on it and sometimes disappears.

How do I fix this? I just want to listen to some new music!

How to get a working iPhone 5s fingerprint scanner replacement?

I bought an iPhone 5s used a few weeks ago and the fingerprint scanner and home button were replaced by the previous owner. It works as a home button but the sensor doesn't work. I was planning on buying one on Amazon but all the reviews said the sensor doesn't work. I did some research and found that each sensor is specifically paired to its original device and devices will not work with any other sensors. Is there any way to get one that works (from apple maybe?) or make the replacement work?

IPhone 5s no connection/service?

My iPhone 5s usually says "LTE" next to the AT&T logo in the top left corner of the phone, but today the "LTE" icon wasn't there, I can't send texts or use the internet or use snapchat, twitter, instagram, any of that without using Wi-Fi. Everything was working just fine this morning, I checked my phone a few hours later, opened up Safari to search something and it wouldn't load, same thing with messages and apps, failing to send, etc. What is wrong and what do I need to do? Also, sorry for sounding oblivious I'm not really too knowledgable with these kinds of things.

How to backup iphone 5 picutres?

My ihpone 5 screen is cracked and the lcd isn't working so i can't use the touch screen. My old images are in there. They are very important to me. If there's any way please let me know. If not… Is there a place i could buy a cheap screen and lcd to go get it fixed? Because everyhtng is 100$

Is it too late to get ios 7 on my iPhone 4s? I'm still on ios 6 and don't want to get 8?

I didn't really care for the new look of ios 7 and never updated the software on my iPhone 4s, but now that ios 8 is out, I wish I had updated to 7 while I still could. I really feel like my software is old and outdated, so it would be nice to upgrade.

Is there any way to upgrade to 7 now?
If not, I'll stay at 6 because I hear ios 8 runs terribly on 4s.

WHY is my iPhone 4S not deleting my messages?

So like, basically if i delete a message thread, it deletes. Then my phone freezes, and won't allow messages in or out. I restart my phone, the threads are all there again. I've tried deleting my message threads, then leaving it overnight to let it do it's thing, it's worked once, hasn't worked since. Does anyone know any other methods? I really want to delete all my messages. It takes up a lot of space.

A Good $450 Or Less Gaming Desktop Build?

Yeah, I know, it isn't much money, but recently I bought an expensive iPhone 6 and a MacBook Pro.
Now, I want something to for gaming!
So, these are my options;
Either buy a PlayStation 4 for $450 (In Canada!)
Or, get a gaming PC for $450.
All that I need are the parts, I already have Windows 8 and a monitor.
The only thing that I absolutely need from this build, is that it stays UNDER $450 (CAD Currency) and that the tower/case is either relatively the same size as a PS4. If not, as small as they get!
I'm looking to play games like TES V: Skyrim, Crysis 3, Battlefield 4 etc…
I don't mind playing on Medium settings as long as the game runs smoothly!
If you can, please link that parts from a CANADIAN website such as; newegg.ca (Notice DOT CA) or Amazon.CA!

Thank you for the help!

Added (1). There has to but lots of upgradability!