<s>
Virtual	B-Application
Audio	I-Application
Cable	I-Application
is	O
a	O
software	O
product	O
based	O
on	O
WDM	B-Application
multimedia	O
driver	O
that	O
allows	O
a	O
user	O
to	O
transfer	O
audio	O
streams	O
from	O
one	O
application	O
to	O
another	O
.	O
</s>
<s>
VAC	O
is	O
the	O
audio	O
equivalent	O
of	O
a	O
MIDI	O
loopback	B-Protocol
device	I-Protocol
such	O
as	O
MultiMid	O
or	O
Hubi	O
,	O
and	O
can	O
be	O
used	O
instead	O
of	O
"	O
Stereo	O
Mix	O
"	O
or	O
"	O
What	O
U	O
Hear	O
"	O
features	O
of	O
audio	B-Device
adapters	I-Device
.	O
</s>
<s>
VAC	O
is	O
useful	O
for	O
recording	O
an	O
application	O
's	O
audio	O
output	O
in	O
almost	O
real	B-General_Concept
time	I-General_Concept
or	O
transferring	O
a	O
sound	O
stream	O
to	O
another	O
application	O
so	O
it	O
may	O
process	O
it	O
.	O
</s>
<s>
Because	O
VAC	O
routes	O
audio	O
streams	O
in	O
almost	O
real	B-General_Concept
time	I-General_Concept
,	O
it	O
is	O
able	O
to	O
be	O
utilized	O
in	O
various	O
manners	O
.	O
</s>
<s>
A	O
user	O
could	O
also	O
manipulate	O
VAC	O
into	O
recording	O
conversations	O
through	O
Voice	B-Application
Over	I-Application
IP	I-Application
(	O
VoIP	B-Application
)	O
or	O
Internet	B-Application
telephony	I-Application
applications	O
such	O
as	O
Skype	B-Application
(	O
for	O
example	O
,	O
with	O
SAM	O
Broadcaster	O
)	O
,	O
produce	O
live	O
audio	O
podcasts	O
,	O
redirect	O
audio	O
channels	O
to	O
multiple	O
monitors	O
,	O
or	O
even	O
decode	O
weather	O
faxes	O
.	O
</s>
