Sibelius Scorch is the amazing free web browser plug-in that lets you play, transpose, change instruments, save and print your Sibelius scores on the Internet.
The latest version of Scorch is:
Windows: 6.2.0 build 88
Mac: 6.2.0 build 89
Use Page Up/Page Down and the up/down arrow keys to scroll up and down the score.
To play music in the background while you work, just set Scorch playing, then minimize the window!
*Not available for all scores. Some scores may only play an excerpt.
Windows: Windows XP SP2, Windows Vista (32-bit only) or Windows 7 (32- or 64-bit), Internet Explorer 7 or later, Mozilla Firefox, Google Chrome, SeaMonkey, 20MB hard disk space.
Mac OS X: Mac OS X 10.7, Safari 6 or later, Mozilla Firefox 18 or later, Google Chrome, 20MB hard disk space. Not compatible with Safari 5 on Mac OS X 10.6 or 10.7)
For full compatibility information, see this article.