I downloaded about 20 songs in LW and copied them to my iTunes library. I selected all of them with shift + scroll and then converted them all to ACC format.

I then deleted the original copies from my library, just leaving the ACC format ones.

Now it's near to im-fu**ing-possible getting new LW songs into there.

Here's why:

I copy the new songs into my library and then they get dispersed everywhere throughout the library. It's a freaking hassle remembering which ones I just added. So its really hard to find the new ones and convert them over.