To record the desired background music and sound effects for your demo and facilitate the subsequent asset editing and demo creation tasks, follow the guidelines below. 

• Always keep the project file size limitation requirements in mind.
• Record background music files and sound audio files separately.
• Record audio as mono audio files and save them in the MP3 format.
• You may export/render audio files at any audio bitrate as they will be optimized before publishing, but 96 kbps rate is recommended.
• Avoid music files over 1 minute long; optimal background music file length is 10-25 seconds.

See also:

Supported File Types

File Naming Conventions

Audio Editing and Optimization Tips