RMVB files with music in background?

[MisChief]

Hello

My dad is trying to play some .rmvb files but there is this annoying music in the background and I don't know how to get rid of it.
The file itself is fine because I don't have this problem when I play the files on my PC.

He said he can also hear the background music when playing mp3's as well.
Does anyone know why this is happening and how I can get rid of it? My dad keeps bugging me to help him sort it out

 

[lord filbuster]

Could be a virus, run a scan. Try using VLC too, it will rule out a problem with whatever media player he is using at the moment.

 

[MisChief]

Didn't work I've tried using RealPlayer and VLC as well, both do the same.
Oh well nevermind, he will just have to live with it.... thanks anyway