cdrecord tricks for secret data tracks?

[crank@got.net (i'll teach you to turn away.)]

	ok, so there's a cd burning trick, to mix data & audio, that 
i can't yet figure out how to accomplish in linux. apparently, cd 
players can only read the first session of a disc - so if you put a data 
track in a second session of an open disc & then close it, it's totally 
hidden to the audio player & you don't get the telltale blank track (or 
the BZZT track, depending on your player) that reveals the gay pron you 
hid on your 80s hair-metal ballad mix disc, as if we didn't know. 
anyhow, it's a neat trick & i'd like to learn how to do it.

	thusfar, i've been given this information:

1. burn audio first:
   "cdrecord -pad -v speed=16 dev=0,0,0 -multi -audio filesfilesfiles"
2. find numbers to begin second session:
   "cdrecord dev=0,0,0 -msinfo" (outputs x,y)
3. create iso file:
   "mkisofs -l -C x,y -o tmp.iso filesfilesfiles"
4. burn data second:
   "cdrecord -v speed=16 dev=0,0,0 -multi -xa1 cd_image"

	i also tried burning the data track with "cdrecord -v speed=16 
dev=0,0,0 -multi -data cd_image" since i don't know enough to know if 
-xa1 is what i want. & i've tried burning both data types without the 
-multi, as my reading shows cdrecord doesn't close the disc unless you 
leave off the -multi on the last session.

	but unless there's some weird trick to mounting a 
second-session data track, i can't make it happen. thoughts, anyone?

lish
crank@got.net