To use the content you have copied over, in the mixer screen, select a content cell, select the Content button in the Mixer Cell Menu and then select either the "User_Content" pak (e.g. for individual loops you have copied over) or select the ".." folder selector item and then scroll to find your pak (e.g. if you have copied over the IM Audio Loop Paks) and select the file you want to add to your mix. Alternatively, if you have copied over a pak (e.g. the Intermorphic Audio Loop Paks), then select Menu > New to create a new mix which uses content from those paks (if the paks contain loops, first ensure the Loop checkbox is checked so you can see them!).