I've made a survey with some bird calls in as audio files to help people with their identification, but I'm having issues with the files playing. In Connect only one of the .mp3s will play (although both have the speaker icon next to them). Both tracks play on an Android device, but when I open the survey on my iPhone neither work - unless I use my wireless headphones and then they both play fine.
Does anyone have any ideas why this might be? I'm using the latest versions of the mobile app and Connect.