CAF is an audio file format developed by Apple. It is used to store high-quality audio data and is often used in professional audio production. CAF files support multiple audio tracks, metadata, and other elements, making them suitable for complex audio projects like soundtracks and radio shows.
WMA is a digital audio format developed by Microsoft, primarily used for music and audio streaming. It offers high compression while maintaining good sound quality. WMA files are supported by Windows-based devices and media players, but are less compatible with other operating systems compared to MP3.