Matt,

That's the nice thing about using something like the Signal Link USb 
interface, since it has a built in sound card there is no conflict 
between the interfaces sound card and the  sound card on the pc.

I know John from this list uses MixW software for digital modes, but it 
didn't work for me.  I use MMTTY for RTTY, but it didn't work for him. 
Go figure.

Another option for PSK is digipan.

There are several articles  on use of digital modes by the blind at:

hamradioandvision.com

There are usually a couple of ways to do something, but maybe the  above 
articles will  keep you from trying to re-invent the wheel.

73, Steve KW3A

On 7/9/2015 5:46 PM, Matthew Chao wrote:
> Hi, Folks.  I'm considering getting into other modes besides phone
> and CW.  Am considering JT65,RTTY, Pactor, or PSK31.  I understand
> that there's a Tigertronics soundcard that will interface with my
> TS480SAT, but I'm afraid the speech would migrate there, and I
> wouldn't be able to use the computer's sound card.
>
> With the above in mind, can anyone give me some  advice as to what
> works?  Also, how accessible is the software I may need to work with?
>
> Thanks in advance.--Matt, N1IBB.
>
>
>