So I just got a M-Audio Delta 1010LT and everything I read say's the cards max quality is 24bit/96khz. I've got it set up but jack starts in 32bit/96khz mode. it still works just fine but wouldn't this waste disk space if my card doesn't do 32bit mode. is there any way to make jack start in 24bit/96khz?

this is what the jack docs say
The default settings for jack are to run at 48000hz with a buffersize of 1024 frames per second and a period size of 2. Jack currently supports two bitrates. Jack's alsa driver/client tries to use SND_PCM_FMT_S32_LE, which is the format used by all current 24 bit audio cards except for some USB interfaces that actually use 24 bits rather than 24-packed-in-32-bits. If the device can't do that, it tries for SND_PCM_FMT_S16_LE, which every audio interface should/does support. True 24 bit format wouldn't be a lot of work to support, but its not trivial either.

So jacks 32bit mode is "24-packed-in-32-bits" ? and I'm not wasting 8bits per sample?