Same here. I can't get it to display.
I have V-One folder in panel folder with correct files in it.
I have the V-One\CallOuts in the main fsx\sound folder.
And I have the dsd_fsx_xml_sound.gau in the mainfsx gauge folder

Idon't know what I'm missing.
Everything in the panel.cfg is correct (unless I missed something).
[windowxx] are not in same order due to other mods.

Here's what the panel.cfg looks like:

[Window02]
size_mm=48,288
background_color=1,1,1
position=6
visible=1
zorder=99
ident=12101
gauge00=Captain_Sim.200!iAnim,    0,   0, 24, 32
gauge01=Captain_Sim.200!iCDU,     0,  32, 24, 32
gauge02=Captain_Sim.200!iEfis,    0,  64, 24, 32
gauge03=Captain_Sim.200!iRadio,   0,  96, 24, 32
gauge04=Captain_Sim.200!iYoke,    0, 128, 24, 32
gauge05=Captain_Sim.200!iNote,    0, 160, 24, 32
gauge06=Captain_Sim.200!iExtPw,   0, 192, 24, 32
gauge07=Captain_Sim.200!iExit,    0, 254, 24, 32
gauge08=Captain_Sim.200!iOH,     24,   0, 24, 32
gauge09=Captain_Sim.200!iLight,  24,  32, 24, 32
gauge10=Captain_Sim.200!iAP,     24,  64, 24, 32
gauge11=Captain_Sim.200!iIRS,    24,  96, 24, 32
gauge12=Captain_Sim.200!iP,      24, 128, 24, 32
gauge13=Captain_Sim.200!iATC,    24, 160, 24, 32
gauge14=Captain_Sim.200!iExtBAir,24, 192, 24, 32
gauge15=Captain_Sim.200!iRDR,    24, 224, 24, 32
gauge16=/V-One!v1_Icon,   0, 224, 24, 32


[Window07]
Background_color=16,16,16
size_mm=360,776
window_pos=0.775,0.07
visible=0
zorder=85
ident=12105
gauge00=Captain_Sim.b757.fms!cdu, 0,0,360,750
gauge01=/V-One!CG_Trim, 0,750


[Window45]
size_mm= 256,275
window_pos= 0.0,0.1
position=
visible=1
ident=130
gauge00=/V-One!VSpeedInput,0,0,256,275


[VCockpit01]
file_1024=GSSP.bmp
size_mm=1024,1024
pixel_size=1024,1024
texture=$CGSP
background_color=0,0,0
gauge00=Captain_Sim.b757.sound!main, 0,0,1,1,Captain_Sim\757\sound.ini
gauge01=Captain_Sim.200!iExit, 0, 0, 2, 2
gauge02=Captain_Sim.b757.icon!logic_2D,  32, 224, 2, 2
gauge03=Captain_Sim.b757!CG_S001, 0, 0, 175, 175
gauge04=Captain_Sim.b757!CG_S002, 180,   0, 283, 87
gauge05=Captain_Sim.b757!CG_S003, 180,  90, 283, 87
gauge06=Captain_Sim.b757!CG_S025,   0, 261, 283, 87
gauge07=Captain_Sim.b757!CG_S026,   0, 355, 283, 87
gauge08=Captain_Sim.b757.ap!CG_S006, 561,  1, 224, 72
gauge09=Captain_Sim.b757.ap!CG_S010, 798,  1, 224, 72
gauge10=Captain_Sim.b757.ap!CG_S012, 1, 182, 304, 72
gauge11=Captain_Sim.b757.ap!CG_S014, 403, 182, 304, 72
gauge12=Captain_Sim.b757.ap!CG_S004_THR,  470,   3, 85, 85
gauge13=Captain_Sim.b757.ap!CG_S005_SPD,  470,  93, 85, 85
gauge14=Captain_Sim.b757.ap!CG_S007_LNAV, 563,  93, 85, 85
gauge15=Captain_Sim.b757.ap!CG_S011_HOLD, 845,  93, 85, 85
gauge16=Captain_Sim.b757.ap!CG_S013_VS,   312, 183, 85, 85
gauge17=Captain_Sim.b757.ap!CG_S015_HOLD, 712, 183, 85, 85
gauge18=Captain_Sim.b757.ap!CG_S017_LOC,  805, 185, 85, 85
gauge19=Captain_Sim.b757.ap!CG_S018_APP,  805, 275, 85, 85
gauge20=Captain_Sim.b757.ap!CG_S019_CMD_L,896, 183, 85, 85
gauge21=Captain_Sim.b757.ap!CG_S019_CMD_C,896, 300, 85, 85
gauge22=Captain_Sim.b757.ap!CG_S019_CMD_R,896, 400, 85, 85
gauge23=Captain_Sim.b757.ap!CG_S020_VNAV,  656,  95, 85, 85
gauge24=Captain_Sim.b757.ap!CG_S021_FLCH,  747,  95, 85, 85
gauge25=Captain_Sim.b757!CG_S003_AUTOV,      400, 300, 185, 86
gauge26=Captain_Sim.b757!CG_S003_MANV,  400, 400, 185, 86
gauge27=Captain_Sim.b757!CG_S003_AUTOV2,      600, 300, 185, 86
gauge28=Captain_Sim.b757!CG_S003_MANV2,  600, 400, 185, 86
gauge29=FCDU!FDR,1,1,1,1
gauge30=FCOMPNL!InterfaceCS757,1,1,1,1
gauge31=dsd_fsx_xml_sound!Sound,2,2,2,2,\panel\v-one\v-one_Sound.ini
gauge32=dsd_fsx_xml_sound!Debugger,420,550,600,80
gauge33=/V-One!V-One, 0, 0, 0, 0