bueno Yaw, ya te he contestado en el foro de palib, pero te vuelvo a contestar.
Mira si el fichero wav tiene poco volumen (subelo con algun programa)
en cuanto a la funcion que dices:
void PA_PlaySoundEx2 ( u8 PA_Channel,
const void * data,
s32 length,
u8 volume,
int freq,
s16 format,
BOOL repeat,
int repeatPoint
)
Play a given sound effect, but chose your format
Parameters:
PA_Channel Audio channel, from 0 to 7
data Sound data
length Sound length, with (u32)sound_size
volume Volume, from 0 to 127. 64 if not used
freq Sound frequence, depends on the sound... 11025 by default
format Sound format.
format Loop true/false
format Repeat point