Apple is the "clear winner" among the music download services, according to analysts at Piper Jaffray.

A Forbes news item states that both iTunes and Napster are growing within the market; but that Apple has the highest Web traffic rank.

Piper Jaffray issued a report card on several companies involved in the sector, marking Apple and Napster with 'A' ratings. Audible took a 'B', while Real took 'C' grade.