Distributing music all over your house can be a big challenge. I will investigate some options which avoid having to drill holes into your walls. After having worked so hard to create your MP3 collection, it would be a pity if you were to be limited to listening to it only in one room. Chances are that you dont want to start drilling holes in order to install speaker wires all over your house. Some of the most common options include sending audio via network cable as well as using wireless technologies.
If you already have LAN cables installed then you can use these cables for distributing music. All you need to do is install a software app on your PC which will stream the music via your network. In the other rooms you can add network receivers that will pick up the streamed music and convert it back to audio. Some of these network receivers have a built-in amplifier that can directly drive any passive speaker.
The second option is using a wireless signal by getting a wireless music transmitter. Ideally you want to use a digital signal since you can get optimum sound quality. Traditional FM transmitters are hardly adequate when it comes to offering high signal-to-noise ratio and robustness against interference.