How would I go about ripping the audio from my PS2 BIOS?

I want to rip the audio from my BIOS. (Startup, Menu Loop, etc) I opened my BOOT ROM in PSound, and found these files:
SCPH-30001_R_BOOT_ROM_00001
1KSine.48

How would I go about ripping all of the other audio? (Besides using a hex editor, seeing as I have trouble finding the end of files.)