In music match, click OPTIONS > FILE > Add New Track to Music Library. You want to browse for your LimeWire library. The default location is C:\Program Files\Limewire\shared. Once you find the folder, select the track or tracks (using CTRL-Click) you want to add to the library. Press ok, and they should be added to your library. Now that the songs are in your library, you can simply drag them to your playlist for burning. :-)