I don't have the Pioneer lx01 unit but found some specifications so please correct if I am wrong.
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1x HDMI Output; 3x HDMI Input
2x Component Output
1x iPod Input
1x USB Input (Type A); 1x USB Input (Type B)
1x DV in
2x Scart
2x Optical In
2x Analogue Pair Phono Audio Input
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If these are correct then use one of the Scart sockets if they are fully wired for output.
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Scart plug to phono adapter
Scart Adapter Only £4.39 at TVCables
2phono plug to 3.5 headphone socket
Stereo 3.5mm socket to twin phono, rca plugs, 0.2M
AA3114 Stereo 3.5mm socket to twin phono, rca plugs, 0.2M
Plug your headphones in to that socket
PS: you should be able to find these at a local hi-fi stockest