Every time I download an mp3 song, the file I get is a wma file. Why?

u right click and click on 'Save target as'..a icon will pop up and u c if u file is save as mp3 or wma..if still get a wma. file..u can go to a href="http://www.download.com" rel="nofollow"http://www.download.com/a and type in e search box wma converter..then wala..u convert wma file to mp3 file ;)