I’m joining Sound Ventures to invest in the tech industry I’ve been covering for the last decade. Ten years ago, I set out to have a front-row seat to the biggest stories in tech. I’ve sometimes played a part in them through my reporting. Along the way, I’ve gotten to know many of the most influential founders shaping the future. Now I want to back them. I’ll continue to run Sources independently of my work at Sound. The newsletter is continuing, and I’m investing more in the podcast, which…