Sonos CEO Patrick Spence resigns after a poorly executed app update caused major user issues, leading to customer dissatisfaction and stock decline. Tom Conrad is appointed as interim CEO to address the fallout and restore customer relations. Sonos plans to spend $20 to $30 million to rectify app problems while recent leadership faced criticism over the update and subsequent layoffs. The company is under pressure to innovate and improve user experience after a tumultuous year marked by operational challenges.