I used to have option 1 in my setup. Quite useful at the time.
I have wireless working with psk2. No problem (other than lousy wireless on my ISPs router )-: )
If I remember correctly, I can just connect wired Ethernet to the wan port when wireless is off. However, to connect to it from the wan side, you'd have to add a rule to the firewall to allow that. I think that in my configuration you could do without that by using a normal lan-port, but I'm not sure.
I got again on it but no luck what-so-ever. I understand the mpd errors and I agree with them, as in I have to have a sound card connected to make it work. But, unfortunately, I haven't been able to make the USB work; I looked all-ver (I guess) and for my WRT54G v2.2 it seems that the USB pins are different from the standard RH21/23/25/26. I found on a forum that they should be RH19/20 but the first problem was that they were opened by default on the PCB. I grounded them with 15k resistors and soldered the USB data pins but still nothing, the USB soundcard was not lit and not working. Moreover, I was not able to access the router anymore on any interface, it wasn't even responding to ping. The lights were happily blinking in Normal mode and in "safe" mode I could access the router only a couple of times and then it was dead.
Once I desoldered the wires everything returned to normal . I am really puzzled by this behavior and I ran out of places to look for.
PS: I even found my BCM5325 pinouts and I tried to make some sense out of it but nothing (see pic). My RH19 and RH20 are actually connected with pins 40 and 49.
It's OK, I just wanted to share my experience and maybe others have bumped into the same thing. If I will not find the answer in a fashionable time frame then I will have to drop this project. Buying a router + additional components doesn't quite make sense since for the same money I can buy a stand-alone IRadio from Philips for example.
Anyway, thanks for your help I'll probably come back with other issues once I figure out how to connect the USB.
Might I suggest going with the raspberry Pi, it this fails. That way you can still tinker with your radio and add features as you like. It's a lot more fun than just buying a philips radio.
The suggestion sounds well and indeed the pleasure and fun are coming from building and tinkering with it. However, since I don't have a raspberry pi this means more dough put into this project. It's a pity I have to drop this but it seems that my v2.2 board is weird, it doesn't resemble other v2.2. So, until some other "freak" comes up with the USB pinout for this board I will just revert to the original firmware or DD-WRT.