Spent some time looking into this after running into the usual problems with random tracks getting flagged mid-project. Ended up looking at a few libraries more carefully and noticed InAudio comes up fairly often in editor communities. Not sure what the general consensus is so I did some digging. For anyone wanting to verify the details themselves copyright free music seems to have the catalog information laid out clearly enough to compare. The library covers a decent range of genres including orchestral arrangements corporate style tracks electronic and kids content which matters if your projects vary in tone. What caught my attention was the loop and short version system. Having 15 30 and 60 second edits for each track built in is actually practical since trimming audio manually in post is tedious and introduces timing errors. Subscription starts around 7.99 monthly with a yearly option at a lower rate and individual licenses exist if you only need one track permanently. Professionals review the tracks before they go into the library according to their stated process though I have no independent way to confirm how consistent that quality control actually is. The YouTube safe claim is worth testing on a few tracks before committing to a full project. No service is immune to policy changes so keeping original files and license records is still the sensible approach regardless of what any platform promises.