This is a Billy bookcase that have many lifes, i got it for free from my work many years ago.
(please note - english is not my native language but i hope you dont find too many missspellnings.)
I think started as a Billy like this: http://www.ikea.com/se/sv/catalog/products/8368821
First in 2004 i made it slimmer to fit the short end of a Nexus wardrobe. Later on i made a little shelf that continued to the front. Im sorry that i have no other picture than this. (The lady on the pic is my mother paying a visit).
I started thinking about why electronics has to look the way the do. In my opinion they usually never integrate with their sorrounding in a estetic or practical way. I could go so far to say that i think that they actually are really ugly but since i'am a nice boy i don't. I could go on a long rant about my feelings toward the blue LEDs that are everywere with their cold ugly light but i think you can guess. ;)
As usual, use your common sense! If you don't have any - lend some from a friend. This 'ible includes high voltage and power tools. Be careful.
I'we read som electronics and wooden design in colleage so i have a fair idea about how to do.
Since i didnt have any place to put the shelf in a standing position i first decided to lay it down. The ends got feet made by MDF board and a third support was added in the middle to take the weight of the books.
Step 1: First - electronics
It was powerful enough, the right size och quite cheap. I think the pictures speak for themselfs, it's quite easy to assambly.
The power goes throu a filter and a relay. I used a normal internet cable for the audio from my media server. The cable has eight treads that send right and left cannel and a +12v signal if the computer plays anything. If the sound turns of the amplifyer turns of after a while. A feature i think should be on all electronic equipment.
* And now i know that some people thinks you have to have thousands of watts to get good sound. Maybe in a concerthall but i live i a small flat with neighbours all around and usually dont play very loud.