No offence but you have to see that you are posting somewhere that people arn't up to speed on what you are doing. But they are stilling trying to give you alternatives. I'll ask you this. I have an old 71 jaguar xj6 that stalls after idle for 30 sec. I have checked both fuel pumps, they are fine. What is wrong? Is that enough info? Am i in the right place, best place to get an awswer? Maybe you can see that since your problem is unique, you arn't going to get a quick, or easy, or even a good answer necessarily.
Anyway, what i have to add, you can defineatly use 2 audiophile 2496's at once. Infact you can use 5. I've only used 2 at once though and i can assure you that works. Actually any soundcard from the "delta" family will work in conjunction with another one. Now the issue is if the destination (program) can easily work with two cards. I know protools most defineatly can. I would image it would work with 5, i don't know, i would never need more that two.