Walter: Jesse, what's a band that always kills it?
Jesse: I don't know, Mr. White.
Walter: Jane's Addiction.
There's a blog dedicated to translating MTH songs that has the translation of everything, but in a nutshell is Daisuke is screaming at people to stop uploading their music to Winny (p2p sharing service) and Nao is telling him that no one even uses Winny anymore, and there's no reason to be so upset.
Haha, this just happened to me too! First I was playing as Trevor and saw two Michaels walk out of the trailer. Then I switched to Michael and was able to follow the other around.