Rather than reinstalling with a new image, I followed this video and got my pi zero W working with no problems:
https://www.youtube.com/watch?v=rvKHefzOTVc

My brothers mega drive and the opening level music/bright colours of green hill zone. I knew then that I had found my calling in life

Yep let the forum help you out

Getting my audio working was probably the most time consuming/difficult part for my project, but I got it all working eventually and its definitely worth doing it properly! I recommend the USB audio way personally, as the PWM method was too much of a pain for me.

I see my wiring above - I couldn't get the 2.5W amp working with my setup, so in the end I went with this USB DAC/amp: http://www.ebay.co.uk/itm/171898196952?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=272578557543 And i wired it up...

Is your speaker wiring correct, off the top of my head my speaker is -ve on the left and +ve on the right. Seems to me you have them wired back to front to the amp? You should get sound using just that configuration you have yes, or some kind of noise. I think i blew/broke my adafruit 2.5w mono as i...

hi, being a bit lazy and do not want to mod an original controller board so after the most basic board, do not need an aio just the one with the added x/y buttons. in the uk and looking to try and get one for the weekend if possible? thanks You can order them from OSH Park I have ordered from them ...

Sorry a bit of a tangent, I have the same headphone jack - do you happen to know what the pin layout is? I'm struggling with this

This should be stickied/added into a guide of known issues/resolutions.

Once I soldered the two connectors, my USB hub worked perfectly.

I've wired up the USB audio directly to a speaker, works fine. As soon as I wire in the 2.5w amp, lots of feedback/hissing. Here''s how i wired it:

I have had working audio with the b103 and Pwm method,but I have a lot of feedback/hissing so I decided to switch.