Windows

Minimum requirements for Sibelius 5 alone:

Windows XP SP2 32-bit or Windows Vista 32-bit, 512MB+ RAM, 350MB hard disk space, DVD-ROM drive

You must be running at least Windows XP Service Pack 2 to install and run Sibelius 5. If you have Windows 95, Windows 98, Windows Me, Windows 2000 or Windows NT 4.x, you need to purchase an upgrade to a more recent version of the Windows operating system.

Additional requirements for using Sibelius Sounds Essentials and Kontakt Player 2, especially for scores with many instruments:

Pentium or Athlon 1.4 GHz (or faster), 1GB+ total physical RAM, 3.5GB total hard disk space, ASIO-compatible soundcard. You may be able to use Sibelius Sounds Essentials if your computer doesn’t meet the recommended requirements, but you may find that you cannot use as many sounds simultaneously.

Mac

Minimum requirements for Sibelius 5 alone:

Mac OS X 10.4 or later, 512MB+ RAM, 350MB hard disk space, DVD-ROM drive.

Sibelius 5 is a Universal application, which means that it runs on both older Macs with PowerPC processors and new Macs with Intel processors.

If you are running a version of Mac OS X earlier than Mac OS X 10.4, you cannot install and run Sibelius. You may want to upgrade Mac OS X now, although this normally incurs an upgrade fee. See www.apple.com for details.

Additional requirements for using Sibelius Sounds Essentials and Kontakt Player 2, especially for scores with many instruments:

G4 1.4 GHz or Intel® Core™ Duo 1.66 GHz (or faster), 1GB+ total physical RAM, 3.5GB total hard disk space You may be able to use Sibelius Sounds Essentials if your computer doesn’t meet the recommended requirements, but you may find that you cannot use as many sounds simultaneously.

Sibelius 5 Network Licences

Technical information

Sibelius's network licences operate on a client-server model. The Sibelius program itself is installed on the local hard drive of each of the client workstations, and a separate Licence Server program is installed on a single designated server or workstation. The Licence Server program is supplied on a separate CD-ROM from the Sibelius program itself and enables the designated number of Licenced client copies to run on the network simultaneously. The Licence Server also lets you send messages to users of the client copies, and close copies down from the server machine.

Requirements

Sibelius requires a network using the TCP/IP protocol. (Your network may use other protocols in addition to TCP/IP, but TCP/IP must be present in order for the Licence Server to communicate with the client copies.)

The Licence Server program runs on Windows (XP or Vista) or Mac OS X.