Before your COBRA Audio Box will properly play your .MP3 file for your pyro-musical you will need to format your MP3 soundtrack using a sound editing program such as Audacity. If you use a sound editing program other than Audacity, you still need to format the audio file using Audacity to prevent skipping and ensure accurate timing when playing with your 18R2. The Audio Box supports the highest quality 320kbs MP3 compression format.
To format your MP3 audio file using Audacity, perform the following steps:
- If not already installed, download and install Audacity. This step is only required once.
- Download and install the Lame MP3 Encoder. This step is only required once.
- Import your finished MP3 soundtrack by clicking on File > Import > Audio. If you already created your soundtrack and it's currently open in Audacity, no need to import.
4. Once imported, confirm that the track rate is 44100Hz, as shown below.
5. If the track rate is 44100Hz, you can skip this step. If not, edit the Project Rate and change it to 44100Hz, as shown below.
6. Click File > Export > Export MP3.
7. From the Export Audio window choose your USB drive or desired save location, then click Save with the below settings applied. Your audio soundtrack is now correctly formatted.
- Save as: MP3 Files
- Bit Rate Mode: Constant
- Quality: 320 kbps
- Channel Mode: Joint Stereo (Option to check or uncheck "Force export to mono")
If you are running 5.1 or higher, you can enter any filename up to 45 characters, including the .mp3 extension. As well, with firmware 5.1 the audio filename does not need to match the file name on the script file. As long as the Audio Box argument is in the script the audio file will play.
If you are running 6.0 or higher, the filename can be up to 32 characters including the .mp3 extension.
If you are running firmware version 3.0.0 to 4.0.1, use the filename: audiobox. Do not type the .mp3 extension as this is added automatically.