PS2 .PSS files with AC3 audio

[P-chan]

Hi there. 

I started a project for my rom hack for Wild Arms 5 on PS2 which completely removes Japanese lyrics in both OP and ED songs. 

The problem was, WA5OP.PSS and WA5ED.PSS are .PSS files with .ss2 and .ac3 audio tracks. I could not figure out how to mux SS2 and AC3 audio tracks properly in .PSS files. I attempted to remux the .PSS files with .SS2 and AC3 audio but it seems to not work. The sound POPS when at the end of playback with the hacked WA5ED.PSS which might be the same issue for WA5OP.PSS. I even attempted to do a playback test on custom .PSS file that replaced the Dolby logo for Genji PS2 game but it crashes when attempting to playback.

Is there a proper way to mux .PSS files with AC3 audio? I'll provide examples later at least.

Edited 6 hours ago by P-chan