45000 custom audio track?

[terminator]

first i was a little bit confused ...
you wan´t to use /a real audio track/s instead of a dummy?

i never done that but you need a (good) wave editor and blow up or cut down
your prefered audio file/s to fit the lba value.

or, use a hex editor, load the dummy tracks and insert/overwrite your audio as hex
if you are familiar enough with this stuff.

note, if you use wav files, there´s a 44 byte header before the raw data.
maybe you can use some raw2wav software to make a "real" wave from
a dummy (createt with makefile or newfile)

but i think if you want to to that procedure more than once,
try to find an easy to use wave editor.
i have no doubt which one is good.
but others know that, i´m sure.