I don't want to leave a 2 star because this program seems to be everything I'm looking for, The problem is I'm having issues with getting it set up. I've tried following the tutorials but it seems no matter what I try, my music player (using Windows but will be moving the Linux soon) is just not being recognized by Tuna. If I could get some further assistance with this it would be greatly appreciated!
If it has stopped working, and changing to a lower scaling factor does not cause it to start working again, then you may have triggered a more significant error that I am (purposefully) not trying to recover from. Removing the filter and re-adding it should activate it again if it was working in the first place, or restarting OBS can also fix this.
If your input source is in the correct resolution range, and removing/re-adding the filter, or restarting OBS does not fix this problem, your OBS log should have relevant error messages from the plugin.