AVR-Chat

Err... I suppose I could look on a datasheet and try to guess but 
I'd rather defer to the group:

I want to do some audio processing and don't really want to learn 
ASM (or DSP-ASM); I'd rather stick with 90% C.  I want to join an 
Atmel processor with an AD1871 (24bit, 96KHz -- 2 sport access; may 
be multiplexed -- after I get the data streaming, I won't need to 
mess with it again), and, for my first project make a spectrum 
analyzer display on an LCD.

But at 100KHz*32 bits, thats 3.2MHz in just I/O...  Is an Atmel  up 
to that kind of task (which ones?)? Can I store to an external ram 
(10s (32mbit?!) worth) and process that in non-real-time?

I'd also like opinions on a couple of other processors if the Atmel 
can't do it (err... I know this is Atmel territory, and I'd much 
rather deal with Atmels, but I've never had to do something that 
needed this much horsepower before):
  Microchip dsPIC - (Ugh.  Not only DSP-ASM, but uChip DSP ASM)
  SiLabs 8051f310 - 25 MHz/MIPs 8051ish (not sure about the sports)

Thanks,
Thor Johnson