Global Portable Media Players Market Size, Share & Demand Report By Product Type (High-Resolution Audio Players, Mid-Range Audio Players, Budget/Entry-Level Players, Rugged/Fitness-Oriented Players), By Application (Personal Use, Fitness/Outdoor, Professional/Audiophile, Automotive, Educational), By Distribution Channel (Offline Retail, Online Retail, D2C, Specialty Stores, Subscription/Bundles), By End-User / Traveler Type (Individual Users, Group Users, Professional/Audiophile, Students/Young Adults, Families), By Age Group (18–24, 25–45, 46–60, 60+) By Region & Segment Forecasts, 2025–2030