When I see or hear something I like on the Internet, I like to save a copy to my harddisk. Streaming audio and video, after all, has the tendency to go away. So how do you do this? Here are some tips but they're only for PC users, I'm afraid.
I've tried a number of ways to save videos from sites like YouTube and Google Video. The best thing I've found — which is not to say it works everywhere — is Orbit Downloader. This is a free program that acts as an add-on to your browser. It works best when you're on the home site of a video clip and not on a web page that has it embedded. Let's say you see a YouTube video on my site and you'd like to capture a copy. Click on my embedded copy anywhere except where you click to start or stop the video. That should take you to the YouTube page where the clip originates. If you have Orbit installed and the clip is playing, hover your mouse over it and in a second or two, it'll give you a little window you can clip which will enable you to save the video as an FLV file.
You'll need an FLV player installed to run these clips later. The one I use is FLV Player and it's also free but you may have to root around on this page for a company called Applian Technologies to find it.
If you download FLV Player there, the installer may also ask you if you want to install a couple demos of Applian products. You may want to do this or you may not. Applian makes an array of programs that capture streaming audio and video from websites. They are not free and in some cases, they take a little effort to set up properly. Depending on how badly you want to capture the stuff that Orbit won't grab for you, the time and expense may be worth it. Many of their products like Replay A/V have a timer function and a tuner for Internet radio broadcasts so you can use them like a TiVo to record online programs. I've captured shows from BBC Radio and Internet radio stations (like Shokus Internet Radio) with Applian software.
I've been using their wares for some time and have generally been happy with them…but I'll caution you about one other thing. They seem to come out with a new product every month instead of upgrading the old ones. Many of their products provide overlapping functions and when a new one comes out, I'm never sure what it does that my old Applian products don't do. Make sure you experiment with a demo before you cough up any money. That's good advice, of course, for any software you purchase but it seems especially prudent in this case.