Build a Spectrum analyser with Raspberry Pi and RGB-LED strip

I need someone to write a tutorial for a spectrum analyser like this one for me: [login to view URL] You can use the instruction above as an example, with the difference that I want to use a cheap RGB-LED strip where can't controll each LED, but the whole RGB-LED strip as a whole. I don't need the different spectrums of a MP3 shown as light, but the whole RGB-LED strip to light according to, for example the bass. Use the instruction above as base, change the Python code as needed and provide me a tutorial on how to build the project I described above. Bids above 100 Dollar will not be accepted. The fees is however negotiable depending on the actual work to be done.