For the Audio Box to play the MP3 file when the 18R2 script begins, you need to enable the Audio Box argument in the script header row, column E (see below). Performing this varies depending on what software program you are using. For more information on scripting, including the header row attributes, see Scripting.
COBRA Show Creator - If you are using the web-based, cross-platform (PC or Mac) COBRA Show Creator, you can set the "Use COBRA Audio Box" to Yes from the Show Settings. When first creating a show, if you choose to add music, this attribute is automatically set to Yes. If you are using firmware version 3.0 to 4.0.1, make sure your audio filename is audiobox.mp3. If you are using firmware version 5.0.1 to 5.0.5, make sure your audio filename, when imported into COBRA Show Creator, has no more than 9 characters excluding the .mp3 extension: for example, 123456789.mp3. If you are using firmware version 5.1, make sure your audio filename, when imported into COBRA Show Creator, has no more than 45 characters including the .mp3 extension. If you are using firmware version 6.0.X, make sure your audio filename, when imported into COBRA Show Creator, has no more than 31 characters including the .mp3 extension. If your audio filename is too long, you can re-name the audio file, re-import the audio file into COBRA Show Creator, and then re-export the COBRA script file into the 18R2.
Microsoft Excel - If you are using Microsoft Excel, you need to add the Audio Box filename into column E within the header row. For example, audiobox.mp3. If you are using firmware version 3.0 to 4.0.1, make sure your audio filename is audiobox.mp3. If you are using firmware version 5.0.1 to 5.0.5, make sure your audio filename has no more than 9 characters, excluding the .mp3 extension — for example, 123456789.mp3. If you are using firmware version 5.1, make sure your audio filename has no more than 45 characters, including the .mp3 extension. If you are using firmware version 6.0.X, make sure your audio filename, when imported into COBRA Show Creator, has no more than 31 characters including the .mp3 extension. For sample scripts please see Example Scripts.