This can determine which sound library you use too i.e. Check you choose the most applicable Sound Set from the far right too. You'll now find you can activate the devices you want f rom the Available Devices list on the left and deactivate any unwanted devices from the right. Click New at the top and type in a name (it doesn't really matter what you call it as l ong as you will recognise it).
He re, you can set up a new Playback C onfigu r ati on. If you're not getting any sound during playback or would like to direct Sibelius' playback to a diffe rent device go to the Play menu and choose Playback Devices. 631: How to play back through a different device