@Dael_Sutton & @Rae, JWTG takes over the media feature on most mobile devices regardless of internal sound settings. Anything external is paused or stopped. Unless you have access to someone with extensive ability to work at that level on your device, the easiest thing would probably be to add a separate device to play the desired audio regardless of what is happening on the one used for JWTG. Another approach would be to petition Ludia to change how this works so that your desired results is achieved.
Suggest you have many that agree with you and are ready to let Ludia know that it matters. There is generally a significant amount of work planned well in advance. Getting this added soon will require adjustments to those plans even if it’s possible to accomplish on current or next generation mobile devices.