The Scorched Sites Directory is Sibelius Software's own growing directory of sites using the Sibelius plug-in allowing you to play and view music online. Sibelius have also recently launched ScorchMusic which is a showcase for original music and arrangements in Scorch format. Some of these can be printed for free. Sheet Music Plus is a commercial site stocking an enormous collection of sheet music.
Any Score similarly has classical and other sheet music including some available for free.
It specialises in Jazz as well as classical music. EMusic provides MP3 downloads from a wide range of different musical genres. All rights reserved.