I received a review copy a few days ago and have made it halfway through the DVD (I saw all the episodes originally on WB, but it's a show I like to watch again) and as of episode 12, all of the music has been preserved. Why do I post this? Supernatural uses a TON of classic rock music, the same music that is keeping WKRP and Wonder Years from coming out on DVD. In the first 12 episodes, everything from AC/DC, Def Leppard and Ratt to Bad Company, Rush and Blue Oyster Cult to even the very recent Fall Out Boy has been transferred to the DVD flawlessly. I already snuck a peek at the last two episodes and episode 21 still has the Kansas "Carry On Wayward Son" series recap and episode 22 still has "Bad Moon Rising" playing during it's final moments. I just figured this was worth posting since I know from the moment Supernatural premiered that people were curious if music rights would affect the DVD, and from the looks of it, Warner successfully got everything taken care of. Now I am looking forward to see if season 3 of One Tree Hill (same network, DVD company and season) will still have the Led Zeppelin song that played during its cliffhanger finale.