How to solve common issues with adding custom audio to asset flips
Overview
If you're reading this article, chances are you have encountered an issue where an audio file you wished to upload was not accessible or not compatible with our asset flip interface. This article provides guides for solving several common problems.
Required Software
The guides in this article will use "Audacity", a free tool for editing audio files available across a wide range of platforms. You can download Audacity here.
Issues
The sound file I want to upload does not appear in the file browser window.
If a sound file does not appear in the file browser window, or can not be dragged into the file upload window, the file you are trying to upload likely doesn't have a supported file extension (e.g. ".wav", ".mp3" or ".ogg"). You can fix this by following the "Converting audio files to a supported file format" guide further down on this page, making sure to select a supported file type.
The .wav file I am trying to upload is not supported, because it is either compressed or has an unsupported encoding format.
Solution: Follow the "Converting audio files to a supported file format" guide further down on this page, making sure to select "WAV" as your File Format and "Signed 16-bit PCM" as the Encoding format. (Some games may also support Signed 24 or 32-bit PCM).
I have uploaded a custom audio file, but it can't be heard or is played back distorted in-game.
First, double-check that the file is played back correctly on your computer. if the issue does not appear when playing back on your computer, you can try following the "Converting audio files to a supported file format" guide further down on this page.
My custom sound is played back too loud or quiet within the game.
Some games may support volume adjustment within the asset flip interface:
If this feature isn't available in the game you're trying to customize, or the highest settable volume is still too quiet, you can follow the "Adjusting the volume of an audio file" guide further down on this page.
Guides
Converting audio files to a supported file format
Open the file you wish to convert with Audacity. Certain file formats, such as ".m4a" or ".wmv" may require that you have installed "FFmpeg" for Audacity to be able to open them. A guide for installing FFmpeg is available here.
In the toolbar, select "File" > "Export Audio...". The audio export window will open.
Choose where you wish to save your converted file and select a supported file format. Check the file requirements to see which extensions are supported by the game you are trying to customize.
Be aware that if you're saving as a .wav file, many games will additionally require that the "Encoding" setting is set to "Signed 16-bit PCM".
Click Export. The created audio file should now be compatible with the asset flip interface.
Adjusting the volume of an audio file
Open the file you wish to adjust the volume of in Audacity. Select the entire length of the audio track (CTRL + A). From the toolbar at the top of the screen, select "Effect" > "Volume and Compression" > "Amplify"
The "Amplify" window will open. By default, the "Amplification (dB)" setting will be set to the maximum amount the sound can be amplified without causing distortion, so we recommend sticking below this value.
Adjust the amplification value to match your needs, then click "Apply".
Save the audio file using the steps described in the "Converting audio files to a supported file format" guide.