Well if it outputs sound via this cable without cutting i dont se the fuzz :)
Connecting the Cable to the PSP and from the Cable to and adaptor and from the adaptor to a
RCA lead to a Stereo :)
If this would work i wouldnt complaign :)
The PSPs speakers would be muted but if you can build a little box allowing you to connect 2x RCA cables and adjust the PSPs gain trough a potentiometer "Volume knob" you could combine both Stereo sound and GPS sound ;)
i think that a box with 4x RCA connectors on one end 2x Right and 2x Left with one of the RCA channels going trough a volume knob and coming out in a 2x RCA (Combined Right from both devices to 1x RCA Right and likewise on the left channel resulting in a 1xRCA Left so youll end up with a RCA Left and Right output :)
This way you could control the ammount of volume the PSP outputs and combine the PSP sound via the Phone out to your Carstereo speeker if it has a Line In function or if you want to hear both PSP + Stereo sound and you have a Amplifier you just connect this box to it ;)
http://www.vampire.se/misc/psp/misc/...connector3.jpg
I just ordered this from
http://www.pc-mobile.net/pspgps.htm:
1x - GHPSP - Holux GPSlim 236/240 cable for PSP
1x - PSPUE1 - Ready made DIY Mini-USB Extension cable for PSP
1x - Remote/serial/headphone plug ( 2.pcs in the package )
Hopefully ill get my hands on a Holux M1000 or a GPSlim236