I would like to connect my laptop's headphone jack to my stereo's RCA
input jack so that I can hear MP3's and video files on my stereo/TV --
the problem is that I get a hum when I use a direct cable, even when
there is nothing generating any sound on the laptop.  Is this due to an
impedance mis-match?  How can I fix it?  I can't seem to find any
circuits on the Internet, but I'm sure that they must be out there... :)

Thanks in advance,
Chris

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