I think you might be able to fix it that error by rendering it in a video editing software like Song vegas and set it to ".wave" type and make sure it's 5 seconds long.
Some of the .wav files don't work on the kiai and sound items maybe because of compression or any difference in frequency? I don't know
so try different online sites
Na sahi kuch magar itna to kiya karte the
Wo mujhe dekh ke pehchan liya karte the