Don't ask me how, but i managed to make my player un-bootable.
Copied and pasted the script, edited the file location to my own. converted the wavs to pcm, in the correct format.
Woundn't play a sound.
Gave permission for the script to have execute permission, and also the pcm files in the other directory.
Wouldnt play a sound.
Added
;@EXEC_ONCE /drive0/var/setvol
;@EXEC_ONCE /drive0/var/pcmplay < /drive0/var/startup/1.pcm
followed by
;@EXEC_ONCE/drive0/var/random.sh

Then wouldn't boot?
I've re-pumped the partition and having another go now with just the singular startup sound.