From Bemanistyle...

http://www.bemanistyle.com/index.php/news/ddr-hottest-party-2-demo-san-diego-comic-con-2008-888

Licenses/Covers
Prince Royal Black or White
Young MC Bust A Move [Includes Original Music Video]
Jenn Cuneta Come Rain Come Shine
Justice D.A.N.C.E.
Sunshine Superman Makes Me Wonder
FRAZ Nite Runner
Basement Jaxx Red Alert [Includes Original Music Video]
System 7 Scramble
LCD Soundsystem Tribulations
Haley Hunt Umbrella
Pop n' Fresh We Got The Beat

Konami Originals
U.T.D. & Friends Lesson by DJ
MC DDR Lesson2 by DJ
NM feat. Heather Elmer Closer to my Heart (jun remix)
dj TAKA Desert Journey
U1 & Krystal B escape
NAOKI feat. YASMINE INTO YOUR HEART (Ruffage remix)
TËЯRA feat. 宇宙戦隊 NOIZ (UCHUUSENTAI NOIZ) 鏡花水月楼 (KYOKA-SUIGETSU-ROW) (DDR EDITION) [transplant from GuitarFreaks/DrumMania V5]
Lea Drop feat. Marissa Ship JUST BELIEVE
jun feat. Heather Twede (gedis) Racing with Time (NAOKI'S 999 remix)
DANNY D STAY (Joey Riot remix)

Looks like some good stuff so far.  I believe the TËЯRA song is also in GF/DMV5