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3+ New Sample audio file for Testing - Learning Container
Audio Formats and File Types - Soundbridge
Audacity tutorial: Converting to mp3 or AAC and other formats, example: Matthew Smith - epic orchestral synth music for film and game effects; Buanzo's LAME mp3 library
What Is An MP3 File (And How Do I Open One)?
xml - Decode a proprietary audio package format into mp3 file using bash - Stack Overflow