I use a Cisco linksys HomePlug to transmit ethernet over the copper power lines in my apartment. Funny thing is if I have my logitech z5500 speakers powered on

I use a Cisco linksys HomePlug to transmit ethernet over the copper power lines in my apartment. Funny thing is if I have my logitech z5500 speakers powered on I can hear the activity on the line, pretty annoying haha