The VCR part of my TV/VCR Combo is broken & cannot be repaired. I recently received a DVD Recorder/VCR Combo as a gift and would like to connect it to my TV/VCR Combo. My TV/VCR Combo has the necessary video input but only one audio input. Can I still connect my TV/VCR Combo to my DVD Recorder/VCR Combo with only one audio input?