concept of media streaming eventually came to America. In the early 1920s, George Owen Squier was granted patents for a system for the transmission and distribution of signals over electrical lines, which was the technical basis for what later became Muzak, a technology streaming continuous music to commercial customers without the use of radio. The Telephone Music Service, a live jukebox service, began in 1929 and continued until 1997. The clientele eventually included 120 bars and restaurants in the Pittsburgh area. A tavern customer would deposit money in the jukebox, use a telephone on top of the jukebox, and ask the operator to play a song. The operator would find the record in the studio library of more than 100,000 records, put it on a turntable, and the music would be piped over the telephone line to play in the tavern. The music media began as 78s, 33s and 45s, played on the six turntables they monitored. CDs and tapes were incorporated in later years. The business had a succession of owners, notably Bill Purse, his daughter Helen Reutzel, and finally, Dotti White. The revenue stream of each quarter was split 60% to the music service and 40% to the tavern owner. This business model eventually became unsustainable due to city permits and the cost of setting up these telephone lines. History Early development Attempts to display media on computers date back to the earliest days of computing in the mid-20th century. However, little progress was made for several decades, primarily due to the high cost and limited capabilities of computer hardware. From the late 1980s through the 1990s, consumer-grade personal computers became powerful enough to display various media. The primary technical issues related to streaming were having enough CPU and bus bandwidth to support the required data rates, achieving real-time computing performance required to prevent buffer underrun and enable smooth streaming of the content. However, computer networks were still limited in the mid-1990s, and audio and video media were usually delivered over non-streaming channels, such as playback from a local hard disk drive or CD-ROMs on the end user's computer. In 1990 the first commercial Ethernet switch was introduced by Kalpana, which enabled the more powerful computer networks that led to the first streaming video solutions used by schools and corporations. Practical streaming media was only made possible with advances in data compression, due to the impractically high bandwidth