I've set up a custom sound for an Enchantment on hit effect. Pressing the play button on the Sound Descriptor dialog plays the sound just fine, but when I hit someone with a weapon with said enchantment, the sound does not play. I've also tried playing it from a Papyrus script, which doesn't work, as well as the console through PlaySound but then it just claims there is no such sound.

Any idea what's going on?

Bump?

What happens, if you rename the file extension to .fuz without converting to another format (just rename) ?
For voices, with the fuz-extension Skyrim can play WAV and XWM files - even if the format is xWMA oder Wave.