Do the USB 9.X drivers that come with the SX-PR4 work in XP? I can get sound from my computer to come out on the PR54 and I can record sound from the PR54 to the computer. But the software "Song Manager" version 2.00p to download and upload midi files gives me the following error: "Error! Use transmission on the HOME PAGE screen." Which is what I thought I had did, especcially since the software is very simple and there are not many other menu items to choose from.