Salut Arthur,
 AM> Hi, I'd like to know how possible it is these days to digital recording
 AM> and mixing using computer hard disks as the storage mechanism, with 16
 AM> tracks or more at 16 bit / 44.1 kHz sampling.
No problem, if you have the money.
The expensive part is the A/D converting and the interface to the computer, 
modern hard disks are fast enough and relatively inexpensive.
You can calculate that yourself: for one 16 bit / 44.1 kHz / mono track, you 
need 75 kBytes/sec troughput.
bye ....
         Joe
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