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JackTheRipper, posted Mon Jan 10, 2022 1:54 am (68943)

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Seen in The Grim Adventures of Billy & Mandy (2006), Charlie & the Chocolate Factory (2005), Codename Kids Next Door: Operation V.I.D.E.O.G.A.M.E. (2005), and oddly enough Zathura (2005) although located in the PS2 counterpart [Audio\music\space\mspacelp.GMD].

Look likes this is an unusual archive format that separated data and headers for dual file standard dsp. AOS files have some name.

Data size is at 0xC, subsong number probably at 0x20, 0x44 the samples, 0x4c the sample rate.

To hard extract them, you have to use decimal offset to calculate, first file at 0xA0, then second file at 0x108, file sizes at 0x10c.

Code:

codec = NGC_DSP
subsong_count = @0x20:BE*2
subsong_offset = 0xCC
base_offset = 0x44

sample_rate = @0x8:BE
channels = 1
start_offset = @0x60:BE
data_size = @0xc8:BE
num_samples = @0x0:BE
coef_offset = 0x1c
coef_endianness = BE

BloodRaynare, the .txth isn't right.