Transferring music from iTunes?

I have just recently got an iPhone and have downloaded a media player called MyMedia. I looked everywhere for a certain song to download only to find it was only available on iTunes. This is the only song I have on iTunes as all my others are on the MyMedia player. I read up online that MyMedia does support iTunes transfer (but due to being new to the iPhone malarkey, this is double-Dutch to me)

Can anybody please help?

Is it possible to transfer this single song onto my preferred music player?

Thanks!

Added (1). Thank you, Will, for your answer. The suggestion was a good one. I have mp3skull as the homepage and that was the first place I searched and they did not have it. Unfortunately I have not found a site, even through google, that has allowed MyMedia to download it. Perhaps I'm too unfamiliar with thos app. I'm sorry I didn't add this before. I knew I forgot something!

Water damaged iPhone SIM card?

So my iPhone 5 got water damaged and I got a new, same phone. I still have the SIM card from the water damaged phone. Is it okay to put that SIM card into my new phone? Will it harm my new phone?

I'm in search of a photo editing app?

As a hobby, I like to edit photos on my iPhone just for something to do. I've started a few projects recently but haven't been able to complete them because I need something like the burn effect tool found in adobe photoshop. I've looked everywhere in the App Store for an app that includes this "burn tool" (the burn tool darkens a specified area of a picture causing it to turn a brownish color and look burnt) but I haven't been successful in searching. Are there any apps out there or possibly even an Internet site that would allow me to use a "burn tool" via my iPhone?

Should I get this phone to replace my iPhone 3GS?

Currently I'm using an iPhone 3GS, and its currently on ios 6.1.3, and i've been told that this phone will not receive the new ios 7 when it is released. Currently I have my iPhone on straighttalk, so Its no problem getting another phone. Right now straight talk has a blackberry curve i that i'm interested in. All I do with the phone is get on facebook, use facebook messenger, and use apps like kik, snapchat, and twitter. So is this a good phone? Here is the link for the blackberry, http://www.shopstraighttalk.com/bpdirect/straighttalk/PhoneDetails.do?action=view&productVariantExtensionId=21305827

What to do about this blocked number?

For the past 3 hours, I have gotten a call from "blocked" on my iPhone. I only answered once and the other person on the line keeps asking me if I had any illegal drugs which I don't and I responded saying that this guy has the wrong number over and over but he didn't want to believe me and yet he asks me the same question only for him to get in a angry rage and using all sorts of strong verbal language before I hung the phone up. Now he's still trying to call me but I refuse to answer. Should I get my number change or call the police with the times of when this "blocked" number called me? I went thru my recent calls and written down all the times that this guy has called me.

Added (1). Also, I can't block this number because it comes up hidden and it only shows "Blocked" as there's no 10 digit number whatsoever.

I tried to update my iPhone to iOS 7?

So the smart person that I'm, I tried to update it using utorrent, well i updated it and it was okay but i didn't like it so i decided to downgrade it back to iOS 6.1. 3 and i accidentally did not press the option key when clicking on the restore button so basically it just restored to iOS 7, now when the phone is on it tells me this "This device is not registered as part of the iPhone Developer Program. If you are a member of the Program, please register your device in the iPhone Developer Program Portal." WHAT AM I SUPPOSE TO DO!