If the idea of the music industry caving and giving in to the piracy community by providing free and legal music downloads sounds to good to be true, that's probably because it is. Qtrax, a new website launched Sun. claimed to be doing just that this week, dropping the names of four major labels-Warner, Universal, Sony BMG and EMI-said to be backing the music website that planned to use peer-to-peer sharing to distribute music. By Mon. afternoon, all four labels had denied signing any deals with Qtrax.