The most common Internet audio file formats you might encounter are AAC and MP3. Although MP3 is widely used, the AAC format offers several advantages, especially when creating content for delivery:
This newer format uses more advanced technology.
It offers better compression than MP3, which means higher quality results and smaller file sizes.
The format is compatible with iTunes and iPod. (Even listeners who do not have iPod can still listen through iTunes.)
It supports chapters. (Your listeners can jump to a specific section of your content.) An enhanced podcast can be divided into chapters, allowing listeners to quickly navigate to specific parts of the podcast or content. Each chapter can have an associated piece of artwork.
The format provides the ability to incorporate URLs and pictures set to appear at certain times during playback of audio files. (Images are visible within iTunes and on iPod with color display. URLs are accessible within iTunes.)
Note: You can choose to make your content available in both formats (MP3 and AAC), or your listeners can use iTunes to convert AAC files to MP3 files.
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