You can use an inexpensive mixer to toggle back and forth
between your stereo and computer or to mix the two for recording
by first the computers hard disk and then to CD (if so equipped)
or to a tape (reel or deck) system, provided this is for home
use. I believe an inexpensive mixer can be purchased from Radio
Shack for under $100 (actually about $69 US). But......
        The more pieces you put in the signal path of your
system, the more your chances for interference, line noise
and loud little critters that can create havoc for critical
quality listening/reproduction. Professional mixing equipment
is extremely expensive, but better suited to high fidelity
recording and mixing applications.
        So, your answer is a firm, maybe. Depending on the 
intended application.
        You might also want to keep an eye out for the number
and quality of cables used. The more cables, the greater length,
the bigger the chances of noise in the signal.
        For years I just plopped my cables anywhere into the 
rear of my system and very often had several power cords actually
holding up a number of patch cords and speaker cables. When I
finally read something about this in this Echo and allowed it
to set in, I discovered a pleasant, noticable difference 
(cleaner signal) than before. If anything I learned that
"details are everything" in quality audio.
Cheers, John
grump@netzone.com
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