Thanks mate, I'll have a try tonight ;)

@Freakadude yes, the scriptmodule compiles MT-32 support into the lr-scummvm core, but is not enabled by default because the RPI is not very powerful for it in some games. If you want to try it, go to the BIOS directory ($HOME/RetroPie/BIOS) and in there you will find the configuration file scummvm.ini. Once in there, set these options in the [scummvm] section (if not there, add them): mt32_device=mt32 music_driver=mt32 To return to the default (disabled), delete the options from the config file. Edit: forgot to add an option to the list :)

@hhromic I decided to try the alternate audio files that are on the CD1. They are smaller, less quality, but I thought they might have less trouble decoding or something. Anywya, it did not matter. I noticed that most of the time, the audio crackle happens during the video playback. If you know Riven, and Myst for that matter, it is mostly static renderings with sections of video overlay to animate valves turning. Or water bubbling etc. including dramatic animations that take ove the whole screen. Theses crackle a lot because they are always accompanied by the great sound effects. I mention this thinking perhaps the issue is embedded video playback performance. Just a thought.

OK, thank you

@ectoone Yep, i figured i'd have to adjust the paths. I'll give your suggestion a whirl, thanks!

Nevermind i figured it out. The guide dosen't it make it noob clear that after you have built your own version you still have to actually move the binary to the appropriate folder but as i said in the end i figured it out :)

@mviars Yeah, I am using SCUMMVM and getting back in to Riven after transferring my 5 CDs that dug out of an old box. It works great. Fullscreen is working fine but it does leave black borders on the left and right sides which I expected. I am using defaults for video and render, but messing with some of the scale settings yields interesting results for games like DOTT and Full Throttle. Some settings slow down the interface. I am basically using default and OpenGL. This works great with my 8bitDo bluetooth controllers too. Analog stick moves the cursor. Myst/Riven is pretty fun on the big screen and comfy chair!

Guys, give a try to the lr-scummvm libretro-based core for ScummVM I put for testing here: https://retropie.org.uk/forum/topic/19693/lr-scummvm-request-for-comments-and-testing/ You can do mappings via RetroArch and customise for each game too easily with RA. Also you can use any RA-supported shader. So far it has been working nice for me, would appreciate feedback from other ScummVM players.

Or you can just rename +Start ScummVM.sh in your scummvm rom folder to +Start ScummVM.s. Wth that you don't need a gamelist.xml and still can easily restore it if you need it. Although I'm sure, whenever you update ScummVM it will be restored. Or if you sure you never need it again, you can just delete it.

I like ScummVM simply because its easier to use than DosBox. Plus, I can run the games on my Android Tablet as it's compatible with the touchscreen.

@mitu thanks, I'll look for that option after the scraper has finished (found that while looking for the install options and once I realised what it does I just had to do it). not all have the same files it seems... Driver has a .bin.ecm file, GTA2 and Dark Forces have a .bin and .cue file, Rayman has a .bin.ecm file and dozens of .ape files, Spider-Man has a .ccd, .sub and .img file... Those are the only ROMs I downloaded because they're the only games which I actually bought (for my brother's PS1) but I don't see a real overarching approach here. I don't have a bios file... I saw the Dreamcast page saying something about that but I didn't even have its map so I didn't think anything of it. I see both the Dreamcast doc and the PS1 doc talking of a BIOS file but I didn't get that the emulators are actually missing files; I don't know ehat BIOS files are and do, or where I should get them (probably worth a Google, I'll do that today).

Thank you @ArcadeTV I will be giving this a try. I'd love to hear if you noticed any slowdown or any recommendations as to which filter worked best. Also, is it possible to download latest ScummVM from source, maybe by changing branch to "master" or something of the sort. A lot of games compatability status had been upgraded since 2.0.0

I found a workaround: I added a .scm-File to the root aof the scummvm-games-folder. For atlantis i have the atlantis.scummvm-file insidde the atlantis-folder and a atlantis.scm-file outside that folder. In es_systems.cfg i changed the command: <command>RetroArch\retroarch.exe -f -L "RetroArch\cores\scummvm_libretro.dll" "PATHTORETROGAMES\retro\ScummVM\games%BASENAME%%BASENAME%.scummvm"</command> and changed the extension to scm. <extension>.scm</extension> This means EmulationStation sees the .scm-file as the rom and adds it to the gamelist without annoying subfolders. When starting the rom, wo don't care about the fake .scm-file. We grab only the basename and assume there is a folder with the same basename with the scummvm-file inside it.

Brilliant, Thanks for letting me know so quickly. I will install and configure these emulators outside of Retropie using sudo apt-get install. I will keep tracking this in case they may be ported to the XU4 in the future. Thanks all!

@dudleydes Coming from ODROID, your commands were really helpful to configure my 8bitdo gamepad. Thank you!