[epScript] Suppress (unicode error) on PlayWAV

[armoha]

PlayWAV("sound\Zerg\Ultra\ZUlRdy00.WAV");

SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 10-11: truncated \UXXXXXXXX escape

... which is impossible to fix on python side but can be fixed in epScript. more candidates: PlayWAVAll, Transmission

Original issue: https://cafe.naver.com/edac/116959