Personally, I don't think KUWO is good for download music, maybe not that good for me. Some songs and Bands, you couldn't find them with KUWO. Most software like this might have problem with copy-protected music. I know one software could help: Music Spy. And if you want to download hot music from youtube or other social video sharing website like Vimeo, facebook, you can try this site: http://www.clipconverter.cc/

Good Luck!