Randy, if you want to get into DIY cables(keep in mind Tom's point about the expense of the tools)RG6 coax is certainly more than adequate. Note the point that I made in Charlie's RG6 thread, showing the Belden table to illustrate that the slightly lower attenuation of RG6 is insignificant at the lengths and frequencies used in the home. Cables that thick certainly aren't necessary for your purpose, and just as an example, three of these would serve well for your component connections.

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Enjoy the music, not the equipment.