Yes, almost all software and certainly all the quality ones let you pick 
your sound card.
----- Original Message ----- 
From: "Matthew Chao" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, July 16, 2015 9:51 AM
Subject: Digital Modes and Isolating Sound Cards


> Hi, Again, Folks.  Am more seriously looking into getting involved in
> digital modes.  My question is: is it possible to have the ham
> programs such as mmtty and Digipan strictly work off the USB device,
> while having the PC's sound card handle all other audio functions, so
> as not to cause problems with, say, the SignalLink?  Put another way,
> can Mmtty and Digipan have their defaults set to the SignalLink
> directly?  It seems that when you add a screenreader, things get a
> little sketchy.  I'm using Windows 7/64-bit, and the sound card is a
> built-in sound chip on my PC's motherboard.
>
> Thanks in advance for any help on this question.--Matt, N1IBB.
>
>