Nope, the one I have does not require soldering onto the motherboard, it's plug and play. The designer told me that it is far superior in quality to the FAQ mod.
I know that being out of AA forum for long time I could lose something important... What do you mean for "plug and play" and "don't require soldering"? It's a long time that I would love to connect my 5200 in a more 'enjoyable' way. You know, I have a Sony multistandard TV (PAL, NTSC), but sound never was clear, always some buzz during play.
BTW, if I recall, I find AA forum right for this reason, asking for an help...