Don´t use Kazaa, it is full of ****. But its a freeware so what can we expect of people who want to earn some money on program...

My tip is to use Kazaa Lite, it have junk but not as much lite ordinary Kazaa.

If u use adaware or spybot you will be okey.

Music can harm our computers, you know old bad rock its harms
Midi files can involve some virus codes (macro-virus i think)
The other formats of music im not sure about.

//Sollet