As a publisher, I need to know the required audio quality for MP3 files, the minimum and maximum duration for an audiobook, and the security policy for making changes to payment profiles on ACX. Please provide these details.
Navigate to the 'ACX audio submission requirements' page. Identify the required MP3 file format and bitrate. Search for and navigate to the page detailing audiobook duration limits (minimum and maximum). Search for and navigate to the page detailing payment profiles and security policies. Identify the 15-minute security policy for changes to payment profiles. Synthesize all identified information into a concise answer.
State that the required MP3 file format is 192 kbps or higher CBR. State that the audiobook must be a minimum of 5 minutes and a maximum of 100 hours. State that any changes to payment profiles must be made within 15 minutes of signing in to the account.