My apologies.
Since writing the OP, I fixed the 2600 issue. Launchbox was pointing to stella 2014 instead of stella.
ST I'm still having trouble with. I'm using the Hatari core inside of retroarch. Ultimately I want to push everything I can through retroarch instead of having multiple standalone emus. Mostly because I want to mimmick it all on my android tablet and it's a lot easier to be centralized there to me. I'm pretty new to all of it and just starting to get a grasp on some of it. Most is still sort of confusing.
I've downloaded the emutos zip and extracted it, but idk what to do with the files and/or folders in there.