I just found the CD on the Amazon site and it shows a total of 17 songs.
This is also the same list at the official sony website when you are in the Rock Star site at MSN.
1. Baba O'Riley- Jordis Unga
2. You Really Got Me- Marty Casey
3. One Way Or Another- Daphna Dove
4. Cult Of Personality- Ty Taylor
5. Knockin' On Heaven's Door- Dana Robbins
6. Brown Sugar- Neal Carlson
7. Middle Of The Road- Tara Slone
8. Rock And Roll All Nite- Brandon Calhoon
9. Celebrity Skin- Jessica Robinson
10. 'Heroes'- Wil Seabrook
11. Burning Down The House- Heather Luttrell
12. American Woman- J.D. Fortune
13. Piece of My Heart- Deanna Johnston
14. Smells Like Teen Spirit- Mig Ayesa
15. Remedy- Suzie Mcneil
16. Man Who Sold The World- Jordis Unga
17. Baby, I Love Your Way- Mig Ayesa
Wonder why Jordis and Mig get two songs, but everyone else only sings one?