I recently ran into sound issues in the emulator too. I am aware this is an old thread but since this issue is still present it might help some people sharing my workaround. My workaround is to create a 1 second countdown Timer. Then in the On Elapse screen of that timer, start playing the sound file. You will have to create a timer like that for each individual sound file. Wav files seems to work fine btw. Then when you want to play a sound, choose Start timer and pick the timer dedicated to the sound file you want. For me that prevented most of the audio playback fails in the emulator. If it still fails, restarting the Urwigo program completely should help.
