[InactiveUser45]

About the echo in the audio.

Is it the same with your emulators?

How can I fix this?

Hi,

I have the same with the audio; 'it stutters' (or echo's, I can't really tell). BTW, what's your command in Irix to play some sounds ? ( I only hear the audio on startup/shutdown).
I don't think there is much you can do about the audio though, it is still not perfectly emulated according to the startup screen (MAME 0.221), so the best you can hope for is that the mame devs improve it at some point. On the other hand, networking is claimed to be not emulated yet at all, and that seems to work decently enough for the basics.