I have a carputer setup... almost complete, pics soon...

anyway, i have the audio out to the AUX on the 6 cd dash stereo bc i want to keep the stock unit. Anyway, I was wondering if anyone can think of a way to add a center speaker for when i have it in dvd mode, but when music is playing to just have it as always, simple audio out to the AUX. thanks
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2004 Titan XE, Galaxy Black, Preferred Package.
Picked it up 10/28/04
Best thing thats ever happened to me