The following content is for informational purposes only. You should not use it to illegal download the clips, in any case you must use your judgement to determine which way is legitimate.
Visit your artists's official websites. Some of them provide free files for fans to download. (Sometimes you need to register for it). Look for your artists’ official websites on their album covers, or use search engines such as Google to find out.
Use search engines such as Google, Yahoo and MSN to find some audio or video clip sites.
Use P2P software, short for peer-to-peer file sharing.
Visit YouTube for those clips. However, you could only watch these clips without being able to download them.