The keyword often specifically references the release of CorePlayer version 1.0 and its subsequent 1.x updates (such as 1.1, 1.2, and the elusive 1.3.6). These versions were critical for the S60 v5 platform for several reasons.
For Symbian S60 v5, CorePlayer wasn't just a cosmetic upgrade; it was a complete backend overhaul. It supported a staggering number of formats out of the box, including: coreplayer symbian s60 v5 1