Yeahhh And it works quite well. Can`t wait to get home and plug my old electric guitar into this adapter and into N900. Now i can practice without bother anyone using this BH-505 headphone. Thank you very much for you efforts guys.
EDIT: Tinkering a bit more, although without a guitar yet, i`m curious about if i will manage to play with that delay. I`ll try later and report back. How about you guys ?