No "Musical Mode" in the Pool View/Attributes box

Hi, I am using Cubase LE4 4.1.2 which I got as part of a software bundle when I bought a multi-effects pedal. I am interested in using the audio warp feature but I do not see the musical mode button in the sample editor. I also don’t see this attribute in the pool editor even when I looked in the “View/Attribute” dialog box. Is this normal for LE4, or do I need to turn something else on? Thanks!