If you want all the Dance Dance Revolution songs (which are all designed for pad play), go to
http://zenius-i-vanisher.com/v5.2/simfiles.php?category=simfiles and click one of the simfile categories in one of the platforms for the original songs found in that game. (If the same song and the same stepchart was used in a previous game, it will only be found in that category.) Then, you can click Download Pack in the top right corner to download all the songs in that category, or if you want an individual song, click on one of the songs, then click
ZIP.
Darkanine