Morpheus is a great app. As more and more people start to use it, it is becoming populated with more and more content meaning that you are more likely to find the "hard to find" song or file that you are looking for.
A great tip that I've found that I'd like to share (maybe some of you already know this) is to start a download, then in the "Traffic" window, right click the file you are downloading and select "Find more sources". It will try to find other people to download the file from and if you are fortunate enough, you might start downloading the file from 3 or 4 people at the same time, at a much faster overall rate. For example, 40k/s + 20k/s + 15k/s + 8k/s = 83k/s. You won't always find multiple sources, depending on the file. But if you do, its a great way to speed up a download.
Its a great feature!!