Always use Interactive Music Hierarchy instead of Actor-Mixer Hierarchy. Might be harder, but once you learn it, it becomes infinitely better than shit that's used for SFX.
Don't uncheck "Continue to play on Switch change", so you don't have to do that Stealth Looping thing on switch change.
You can always use other options in "Exit source at" other than "Immediate", just make sure to specify song's tempo.
For some reason, you have to use suspense1 to suspense5 switches for stealth music, because stealth switch doesn't work.
Feel free to message me on discord about any suggestions/issues. (ID: ershiozer). You may not get an answer from me since I cannot use discord for the time being. If you have any questions I'm sure the folks at modworkshop discord server will help you.