Yahoo! will be launching a music subscription service today. Yahoo's Music Unlimited will cost $6.99 per month and for that money they offer access to a song library with a size of 1 million songs.

For comparison, Apple is charging its customers 99 cents a song, Napster charges about twice as much as Yahoo's price will be. The difference is that the songs from Yahoo! aren't really yours to keep. Instead they are rented to you. Once you stop paying the monthly fee, you won't be able to listen to the downloaded songs anymore.

Of course, Yahoo! will offer downloads-to-keep as well, but that will cost the user 79 cents and $8 for full albums.