Hi, I would like to use the classic Windows Live Messenger sound (the one you could hear when receiving a message) by setting it as my cellphone's notification tone. A sample sound can be heard here: MSN Messenger Message Sound https://www.youtube.com/watch?v=ZdVfYylHM9g

There are some ringtone sites from where people can get that sound for free. Those sites claim it is legal, and you can even find that sound on YouTube (see the link above), but before anything I'd like to be sure.

Is it legal to use that sound just for personal use? or is it copyrighted? 

I searched in several sites to find out whether that sound is copyrighted or not, but I couldn't find an exact answer since Windows live Messenger has been discontinued for a long time ago. 

If it is legal, I would use that audio just for my personal use in my cellphone. Otherwise, I'd ratter not to use it.

Thanks in advance.