Streaming Music is putting live data (mostly music) over the Internet.  It's used mostly by music bands, music groups, and music artists.  
The new wave of the future is using the internet to stream live music  around the world.  Having enough CPU power and bus bandwidth to support the required data rates used now is very important because of the quality of the data used is much larger.  Soon there won't  be anymore  am or fm radio stations as far as we can see into the future.  The internet is the future.  To give you an idea of what it will be like heading into the future, check out sites like IndieCharts.com who uses the internet to support Indie Artists and websites like MySpace.com.