Act as a seasoned startup marketing strategist with 10+ years of experience in leveraging podcasts for brand growth. Provide a detailed guide on the best ways to use podcasts for marketing, tailored specifically for [YOUR STARTUP'S INDUSTRY]. Include actionable steps such as identifying niche podcast audiences, crafting compelling [YOUR BRAND'S STORY] to share on episodes, and collaborating with [RELEVANT PODCAST HOSTS] to amplify reach. Additionally, outline strategies for repurposing podcast content into blog posts, social media snippets, and email newsletters to maximize ROI. Share examples of successful campaigns and metrics to track, such as listener engagement and lead conversion rates, to ensure measurable success.