Dance Dance Revolution DDR - Compatible CD-ROMs and DVD-ROMs for 573

Compatible CD-ROMs
The 573 is quite picky about what CD-ROM drive it will work with, especially when running analog games. The following is a community-made list of drives that are confirmed working in the 573:

Compaq 179137-701
LG GCR-8523B
LG GDR-8164B (confirmed great for analog mixes and super discs)
LG GH22NP20 Multi DVD Rewriter
Lite-On LH-18A1H (confirmed working for analog mixes and super discs)
Lite-On LTD-163
Lite-On LTR-40125S
Lite-On XJ-HD166S
Toshiba XM-5702B
Matsushita CR589B (this is the stock drive; works with analog mixes)
Matsushita SR8589B
MITSUMI CRMC-FX4830T
NEC CDR-1900A
Panasonic CR594C
SONY DRU-510A
SONY DRU-810A
LG GDR-8163B (confirmed working with analog mixes)
TEAC CD-W552E

Make sure you have the jumper on these drives set to master.

The following are eBay searches for two of the best drives found to work:
GDR-8164B
Lite-On LTD-163

Note: The DDR SuperDisc will only work with a DVD Drive as the image is a DVD Image.