Technology

I would like to understand the music technology. 

First there actually was an 8 track that people used to play music on. This was bigger than a cassette tape and did not have a reverse on it. There was also a record (phonograph) which use to always scratch when someone bumped the table. Then there were Cassette Disc (CD), and this would always scratch. But now with the digital age, music, along with all other information has moved to the cloud. We don't even see the cloud. Its just there, and music can be played on any device at any time regardless of which device you want to use. So when do the devices change? The amazon tablet will be big. Normally when amazon releases something its normally big. This release reminds me of the Kindle. It just flew off the shelf  !!!