BELLEVUE, Wash. ( TheStreet) -- Shares of Coinstar ( CSTR) exploded in extended trading on Thursday after the DVD rental specialist reported better-than-expected preliminary first-quarter results. The Bellevue, Wash.-based company said it expects first-quarter sales and earnings that exceed both its own guidance and analysts' projections. Coinstar reported preliminary revenue between $567 million and $569.2 million and earnings, excluding items, between $1.36 and $1.40 a share. Analysts surveyed by Thomson Reuters were looking for revenue of $537.66 million and earnings of 90 cents a share in the quarter. Investors responded positively to the company's numbers, pushing Coinstar's stock up $8.95, or 14.6%, to $70.26 in the after-hours session. Coinstar said the revenue increase was driven by stronger-than-anticipated consumer demand at its Redbox DVD rental business, particularly during February and March. Coinstar also raised its guidance for the fiscal year, projecting sales between $2.16 billion and $2.28 billion and earnings of $4.40 to $4.80 a share. Analysts surveyed by Thomson Reuters are currently looking for revenue of $2.22 billion and earnings of $4.09 a share. -- Written by James Rogers in New York. >To follow the writer on Twitter, go to http://twitter.com/jamesjrogers. >To submit a news tip, send an email to: firstname.lastname@example.org. Check out our new tech blog, Tech Trends. Follow TheStreet Tech on your wireless devices.