lr-mame2016 worked OK for me when playing games. I can't tell from your message whether it's working for you but throwing an error which you are investigating or not working at all due to the error. I did the standard Pi 4 build instructions. I couldn't get bbhcotw to run though so I'll be interested if you solve the error for this particular game.

Out of curiosity, I tested a dkong.zip from an unofficial "MAME 2016 Reference Set" which didn't come with any samples for dkong in an extra file. Seems like the 2016 version (aka MAME 0.174) of the dkong rom has its samples included, since – as far as I can tell – it sounds exactly as the MAME 2003-Plus version with an external samples file in my Retropie.

So, if you don't have sampled sound, are you sure you have the right dkong rom file for MAME 2016 / 0.174?

Thanks for the report, we'll see how it can be fixed.

Ok, I read other messages, and I'm currently compiling again, but this time I'm using the git URL with the version fixed by another user from this forum. I'll keep you informed. I'll do some tests and will report.

I have sent the PR. The patch is a kind of "quick and dirty" I am not sure how much can fit into a good libretro baseline (please see the commits comments)

Well i decided to try out on my Pi 3 first to install the files needed and then swap the card over to my 3B+ cause there is some roms i want to test out to see if they work better on the newer Pi.

Ok tried it out on my Pi 3 and still getting the same errors on getting it which is strange cause when i was on 4.2 i was able to download it but now i keep getting that error message after 17 minutes.

@mitu

thanks for the help i will give that a try

@treaves Ow! Ow. My eyes! It burns! Help!

Hi both,

Thank you for your responses. Popped out for a couple of hours, and it seemed to have completed. This ties in with the 3-4 hours stated above

(Pi 3 Model B, Overclocked to 1.35ghz)

@ecks You are partially correct. I wasn't sure what you were talking about since audio seemed fine for me with mame2003. So I played a bit more until the plane boss. The audio is not unstable. It's not fully emulated. Slightly changed fps the further i went.

Mame2003: 60fps most of the time. Audio is not scratchy but not fully emulated.
Mame2010: Same as 2003.
Mame2016: 53-57fps and maybe lower, depends on the area. Audio is slightly scratchy when its in the low 50s but audio is properly emulated.
FBA: I tried it for the hell of it, I'm testing enough damn emulators. It did the worst..45-48fps but audio is properly emulated.

@mediamogul I am using the Pi 3B+ but when i was using a Pi 3 awhile back i had it overclocked to like 1.35Ghz and was still running pretty good from my experience.

Buzz, you were right mate. Lowered the clock speed from 1400 to 1200 and lr-mame2014 installed. Trying 2016 now as well, not expecting any issue.
I didn't have any issues running games at 1400, but it must have been a bit to high to be perfectly stable for compilation.

Thanks again mate.