Our experience is that unless the recorded sounds have really big dynamic range with lots of quiet parts, then it usually benefits from high sample rates, but if the distribution media is cd, then we prefer to use 44.1 throughout the recording to prevent sample rate conversion.
One batch converter I use is Voxengo's r8brain, which is a very transparent and free converter.
You can always use the aux returns if they are not being used since the returns are usually in stereo.
Dammit, what would we do without KitC?
Anyhow, I did some research and apparently, there's a firmware update that will allow the EMU1212 to do 88.2khz -- can't wait to install that later and see what happens. Will also try out Voxengo r8brain [granted that it's freeware] later.
Hay. Getting this card has been bittersweet for me. On the one hand, I now have ADAT capabilities, but I kinda feel duped because for some strange reason, one of the balanced analog outputs of the daugther card spews out at a lower volume if a mono 1/4 PL jack is fully inserted, but works normally when it's only inserted halfway. The other analog out doesn't have this problem so I suspect that 1) the jack is faulty, or worse 2) some SMT component connected to the balanced out has broken down.
By any chance, would you know if E-MU sells daughter cards separately?