I have an older television,can the newer vcr/dvd players with multi audio visual plugs connecters be adapted to connect to the coax input on this older TV.thanks

Yea, but it may be easier to buy a new TV. Here is one site that has just about any converter. Composite Video to HDMI Adapter Converter

If it has Composite video or S-video, then all you need is a $20-30 RF modulator. S-Video/Composite is easy to convert back and forth.

If the device has hdmi out then the conversion gets pricey.