speak or spk are the same,
if file is .wav == You should follow these 2 lines.
if song is in a folder = client_cmd(id,"speak sound/folder/song.wav")
if song is in sound folder = client_cmd(id,"speak sound/song.wav")
if file is .mp3 == You should follow these 2 lines.
if song is in a folder = client_cmd(id,"mp3 play sound/folder/song.mp3")
if song is in sound folder = client_cmd(id,"mp3 play sound/song.mp3")
Regards
Also i can hear the song, is when an player connect to server, or the KZ Thing right ?