Pretty new to forum stuff so forgive me. Also pretty new to drones.. I have an Enterprise zoom and working out the speaker use was easy enough to record and playback audio from the controller. But i want to upload a "Shark Alarm" to it ( I have a water safety service / Lifeguarding). I have got an MP3 file now on both the sd card in the drone and also the one in the smart controller. I can see the file is there and even play it back (out of the controller). But if i try and upload audio, i see the file right there, select it, and then i get a message that the "aircraft storage is insufficient". I went into the settings /storage section and there appears to be heaps of room for what is only 698kb clip. Any ideas?