MusicBox + Pi1B + Ancient 4.1 Speakers => Chromecast for Audio

Since Chromecast-for-Audio hasn't yet been launched in India, eBay sellers are using near monopoly extra for such a device here. Frustrated with being blackmailed like this, I resorted to conjuring up a combo that finally gave some shape to my 2 year old Pi and a ten year old 4.1 music system a life, and gave a good groove to my (otherwise boring) drawing room :) !
to charge a painful 150%

Parts:

• Any Raspberry Pi
• Except PiZero
• Too low powered, would not work
• To clarify, either of the following combos would work
• The old PiA+ / PiB+
• with SD Card
• 2GB or more
• The newer Pi2
• with MicroSD Card
• 2GB or more
• MusicBox
• Win32DiskImager
• Client Operating Sytem
• (Desktop) Windows
• Bonjour
• Optional
• Makes the URL easier
• I had Apple iTunes that install Bonjour support by default
• (Smartphone) Android
• Doesn't support Bonjour out of the box
• Alternative,
• Get the Pi to come with constant IP address
• Very easy with my new OnHub
• Bookmark the URL instead
• Volume Control
• The Web Interface allows changing volume
• From the command line you could try this
• amixer cset numid=1 -- 80%

Happy Listening :) !