10.3. Audio and M4A Playback

If a local track will not analyze or play, confirm that the file still exists and appears in the Add Files chooser for the current platform. Then rescan the track and read the status message.

On Windows, AAC and ALAC M4A decoding depends on Microsoft Media Foundation. Windows N and KN editions normally require the Media Feature Pack from Settings → Apps → Optional Features followed by a restart. The Harmonic DJ installer checks for the required components and offers to open that settings page.

On macOS, M4A uses Core Audio. Linux builds advertise only the formats available through their registered readers.