More and more websites are using audio. You need to change the tune of your message with every new product. or perhaps you are having a podcast/radio program and are you looking to create an awesome tune that helps you with the success.
No matter what your individual situation is, you will need to think about intellectual property. Most free packages are limited to certain usages.
You can use those 1,000 music clips in presentations, productions or whatever. They are free of intellectual property and of profit is the only source to get them all in one. Most platforms offer you just a few. But here you get 1,000 music clips and they are just a download away!