To insert a soft synth from the Synth Rack or menu
1.
If you want to use the Synth Rack, open the Browser and click the Synth button

, then click the Insert button

to display the pop-up menu of installed soft synths.
2.
If you want to use the menu command, use the Insert > Soft Synths command to display the pop-up menu of installed soft synths.
3.
In the pop-up menu, click the name of the soft synth you want to insert.
The Insert Soft Synth Options dialog box appears, unless you’ve previously unchecked the Ask This Every Time check box that’s in the dialog box. If you have, SONAR inserts the soft synth according to the preferences you set the last time you used the Insert Soft Synth Options dialog box.
If you need to open the Insert Soft Synth Options dialog box when it’s hidden, click the Insert Soft Synth Options button
in the Synth Rack. http://www.cakewalk.com/Documentation/default.aspx?Doc=SONAR%20X2&Lang=EN&Req=SoftSynths.04.html