@ DJ Vcdz: Q mở trong property this type of file ghi là WinRAR archive (.7z)
@ Nu_B: The only difference that I did was dl the files with IDM instead of Mega Manager. Now, I swear yesterday when I tried to unzip the files with winrar, after input the pw, it did run the extracting process but then a corrupting type of message will pop up in another window. Today, after having to restart my computer, for some odd reason the old fashion unrar (yes, repeating hitting the pw) did the job and I was able to play the files just fine. I guess for now I'm going to do the old fashion way. In the mean time, I'm going to queue my new dl with mega manager and put the new files in a new folder to see if it makes any difference. Regardless of the result, I will post the outcome. Thank you all for your time and patience with me.