You are able to quickly audition individual SoundObjects or groups of SoundObjects on the timeline. This can be very useful to test out single SoundObject ideas or see how a few different SoundObjects sound together without having to mute/solo different SoundLayers. To use this feature, select desired SoundObjects for testing, right-click on a selected SoundObject, and from the SoundObject popup menu choose "Audition SoundObjects". You can also initiate the audition by using the ctrl-shift-a shortcut or by going to the Project menu and choosing "Audition Selected SoundObjects". To stop auditioning, click anywhere on the Score timeline.