Soundbar + TV + Xbox NEED HELP!!!

Hi, i have a crap RCA sound bar.. it only takes RCA and 1/8 inch. I am a freaking audio engineer and i am stumped with this consumer electronic connection stuff lol ridiculous. Anyways i am using the red green blue xbox cable (or hdmi) to hook into the component in on the tv. Works fine. Now keep in mind i have gotten this soundbar to work with the xbox before and now i have completely forgotten what connection goes where. I have 0 outputs btw except for digital optical out. Everything is component or AV in. Now the only cable i have for the soundbar is red and white RCA. My tv is a 32" LG32LK450 i really need help guys, i can't take the tv speakers much longer. Thanks!

It's weird because i've gotten it connected at an input before with the soundbar playing with the xbox only and not the tv. I pulled all the wires out and bam can't get it back. But yes i guess ill just have to get an 1/8 to 1/8 i really don't have the money for a new soundbar with better options.

wait the 3.5 mm adapter would be white RCA audio to an 1/8" into the tv? I have that cable and it doesn't work... let me know if i am right about the cable you are talking about.

ohhh the RCA to headphone jack does work i remember but the volume gets so quiet it just doesn't even compare to the TV volume. fudge.