I think all new asus boards the onboard sound is optional.
The Asus A7V you can get with or without sound.
Stay away from FIC and AMPTRON. You don't want to skimp on your motherboard. I'd stick to Asus, ABit or MSi. KA7 is SlotA, A7V is SocketA both good boards but not the same, here's a round up:
KX133: Asus K7V or ABit KA7 (Slot A)
KT133: Asus A7V or ABit KT7 or MSi K7TPro (Socket A)
There is also the MSi K7T Master, but it's targetted at higher end with onbaord SCSI and FireWire.
Just a note on RAID if you look at ABit: IDE RAID right now is software RAID, so it uses CPU time to pick where the different stripes go, so IDE RAID0 is a tradeoff, you get higher disk performance, but you get some CPU used. It may help you, or it may not...apperntly there is some IDE hardware RAID on the way, that will be sweet...but software RAID isn't the greatest.
Of course none of this makes ABit a bad board, just dont' use the RAID if it doesn't help you, if you do get a KT7-RAID you can try it out, it might help you, it might not.