I GET TERRBLE CRACKLNG NOISE WHEN PLAYING DVDS. CDS ARE FINE,AND TV THROUGH SURROUND SOUND ARE FINE,BUT DVDS ARE BAD, AND GETS WORSE THE LONGER IT PLAYS. AM ALSO LNKED TO VIRGIN MEDIA.

SOURCE: high-pitched sound when using surround sound

THANK YOU Guest (4/10/08)!!!
That was exactly what I needed! We have had our system for 4.5 years and suddenly, the FM feedback on everything, but DVD and Radio! Your fix helped. Once I set all my presets (at least the current one) to a clear station, the feedback stopped. Hallelujah!! We can enjoy this piece of junk once again! ;)
Amanda - San Antonio, TX

SOURCE: how to create surround effect on cds/dvds which

There is no way to do this in a controlled manner without re-mastering the disc, an unrealistic option.

However, there is a very simple way to extract the out-of-phase portion of a stereo recording, which can yield a quasi-surround sound effect.

To get this effect, connect an additional rear speaker to the positive ( + ) connection of the right speaker output and the negative ( - ) connection of the left speaker output.

Please keep in mind that this only works with a stereophonic (not mono) source and is fairly subtle.

Make sure the speaker you use is at least 8 ohms.

This is an old trick that pre-dates surround sound and works with music CD's too.

This set-up will probably degrade the sound of a true Surround-Sound recording so consider wiring a simple switch to disconnect the additional rear speaker when not in use.

Hope this helps.

Snakeplissken