Goldman Sachs said today that it is raising its Apple estimates for the quarter to 24 cents from 22 cents a share and its fiscal year estimates to $1.12 from $1.08 a share. The increase was made because the firm now expects Apple to sell 1.8 million iPod shuffles this quarter. Goldman Sachs told clients that “with competition unlikely to come from ‘me too’ MP3 players, it will probably take something like Sony’s PlayStation portable to pose a challenge to iPod long term.”