AUDIO:
Composite cables also have red and white connectors for audio. Insert the red connector into the red composite jack labeled IN on your Slingbox PRO-HD. These jacks are also in the top row on the back of your Slingbox. Connect the other end of this cable to the red output audio jack on your SD source. Repeat this process with the cable that has the white connectors.
TIP: If your SD source has an S-Video jack, use it instead of the yellow video connector to get higher quality video. Connect the S-Video cable to the S-Video jack labeled IN on your Slingbox PRO-HD.
Connect the other end of the S-Video cable to the output
S-Video jack on your A/ V source. An S-Video connection carries video but no sound, so connect the audio as explained above. Use the red and white connectors that
are part of the included composite cables. You don’t need to use the yellow connector if you have S-Video.