If you haven't been picking these up as they're announced, Amazon decided to finally give you a way to get all 25 with one click over at their 25 Days of Free page (amazon.com) - scroll down past the days to find the checkable list and "Buy selected song" button.
Oh, one more thing - if you're GIFTING MP3s, Amazon says that you can get $2 off with the code GIVEMP3S. Details about THAT over here.
One of the great blues legends has passed. http://news.yahoo.com/s/eo/20050902/en_music_eo/17287 I promise that it is not my personal quest to make the music section an obituary page. There just seem to be a lot of the greats moving on lately.