AV cables - 3 RCA to 4 pole 3.5mm

I have been tasked with trying to get a device working with a television.
The device is an IUBI blue which was bought second hand and did not come with manual or the right cables. The manual is no problem, I found a link from the forums on www.advancedmp3players.com that worked brilliantly.

The cables are another issue. I thought I had found one on ebay but it turned out not to work as I had hoped. The left speaker appeared to be fine, the right speaker sound was coming through the video connector and very, very fuzzy video with insufficient synch signal was coming through on all three. My guess was that the pinouts were slightly wrong and that the video signal was coming through on the shield of all 3 RCA connectors.

I then return to that popular research tool, the internet search engine and do some further digging. I find a few possibilities, including a note on the page for the cable I bought saying it would not work with the ipod. The device is not an ipod so had not considered this relevant at the time. I rethink this... I then find a page about the AV cable for a Zune (never heard of it? neither had I until this search) listing the compatibilites of several devices and the comparitive pinouts. The site is www.anythingbutipod.com, the link is to the "about" page which is an interesting read.

Anyway - it seems there are at least 4 different pinout combinations in use by different product manufacturers. I need to beep test my cable, see which one it ties in with and then see if one of the other variants will work. Alternatively I could try making a conversion gadget to remap the RCA connections. I think it will depend on how much time I end up spending on it.