boot up in safe mode, download and install the free version of avast (just type 'avast free' in google, but make sure you click on the right link if it redirects you to download from somewhere else).
after it's installed, make sure you update the program and definitions.
have it run a boot-time scan and restart.
avast will conduct a scan before windows loads, and for anything that it finds, choose "move all to chest".
let it finish, and usually that takes care of it.
you can then run malwarebytes again after it's done.
and I echo the sentiments above about realplayer. if you need realplayer to play something, it's not worth playing in the first place.
if you are purchasing a song, make sure you get it in mp3 or mp4 format.