to have sound in any nextgen wince you must use this:

[sound]
pause_mp3_sooner=0
enable_waveout_based_ebp=1
waveout_based_muting_fill_value=1
sound_level_0=16383
sound_level_1=28671
sound_level_2=40959
sound_level_3=45055
sound_level_4=49151
sound_level_5=53247
sound_level_6=57343
sound_level_7=61439
sound_level_8=65535
use_method=4
used_byte_in_method=7
use_os_volume=1
os_volume="255"
master_volume="255"
effect_volume="255"
dynamic_volume_type=0