Which of these music retail products was famously discontinued just 6 months after launch, costing its company over $100 million in losses?

In the dynamic world of music retail, not all innovations succeed. Some product launches that seemed revolutionary at the time ended up as expensive failures. This poll tests your knowledge of one of the music industry's most notable retail missteps - a product that was hyped as the future of music listening but quickly disappeared from shelves. Can you identify this famous flop that cost its parent company millions?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Microsoft Zune HD (2009)
Apple iTunes Ping social network (2010)
Sony MiniDisc players (1992)
Beats Music streaming service (2014)