Napster ( NAPS) boosted its revenue guidance for the third quarter, saying it added another 48,000 subscribers for the period. Shares of the online music service provider added 6 cents in recent trading to $3.88. Napster said it will report more than $28 million in sales for the quarter. Analysts polled by Thomson First Call anticipated $27.4 million in revenue. Earlier , Napster said it expected sales to exceed $27 million. The company didn't update its profit forecast but said during its most recent earnings report that it expects to lose $13 million, or 30 cents a share, for the quarter. Analysts expect a loss of 29 cents a share. Napster said its total subscriber base is 566,000 worldwide, including its university and Napster Japan customers. The company hired UBS in September to help it explore its options -- including potentially being acquired -- and its stock pitched up in response. After no announcement materialized in the following two months, the stock has sagged. Napster has signed deals with NTT DoCoMo ( DCM) in Japan and Cingular, which is owned by AT&T ( T), in the U.S. to help bring its service to mobile phone users in an attempt to offer an alternative to the market-dominating Apple ( AAPL) iTunes and its compatible iPod. Napster also said Thursday that it partnered with Virgin Digital to exclusively market Napster to its U.S. customers. The company reports its earnings on Feb. 8.