[header] How to get sound from computer to tv [title] Locate the audio output jack on your computer. [step] Most desktop and laptop computers use a 3.5 mm mini-jack, the type that's compatible with standard headphones and earbuds, for audio output. [substeps] An hdmi port can also be used for audio output. 
[title] Locate an audio input port on your tv. [step] The most common " audio in " port will be the red and white rca (composite) jacks for an a/v connection.