Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Why waster your money?

There is little point to buy this book unless you wanted a printed copy with a CD-ROM since the author has made and keep updated the website containing the same information.Of course, it doesn't mean the content, which is basically just a list and short explanation of a vast range of sound/music related software, is bad especially for linux beginners. However, at this price, I cannnot recommend to buy one.