How to convert an MP3 message on Iphone to a ringtone?

My friend sent me a recording from her phone. I really like it and would like to set it as my ringtone. It is labeled MP3 when she sent it to me. Is there any way to make a custom ringtone and set the recording as my ringtone. I have a Iphone 4, but my friend has a flip up phone.

Where in colorado can I get my iphone from verizon unlocked?

It has a sim card slot so yes it is unlock-able the ios is 6.1.3

Added (1). It is locked on verizon I went to T moblie they said I need to get it unlocked

Added (2). It is locked on verizon I went to T moblie they said I need to get it unlocked

How to get my iphone to work? - 1

I have been given a iphone 3gs and i have put an Amaysim sim card into the phone but the phone doesn't seem to be reading the sim (or detecting the sim). There was a vodaphone sim in it before but it doesn't work when i put the vodaphone sim back into the phone now.

My sim card is prepaid (not sure if that matters).

In the top left corner of the phone screen it says SOS only (not sure if that matters either).

Is this iphone even worth it?

I want an iphone really bad, but my parents need it to be under 200$ with no contract that will work with a prepaid htc plan.
this is the only phone i could find, but its pretty outdated and i don't know if it will run apps like temple run, youtube, etc.
any thoughts?
http://www.amazon.com/...001UBB9GM/

Why does my iPhone sound not work?

I have the iPhone 4S. When I'm using it, the sound will sometimes work and then a moment later, it won't work. Headphones always work, it's just when I want to play sound out loud. The volume bar will be there, and second later, it's gone and sound doesn't work.