Creating looping sections with Sunauto is generally not very difficult as the model is overly consistent when extending, so all you have to do is extend without changing the prompt and you should get a loop point.
If you have lyrics in your conditioning then you usually can use a [Chorus] section as your loop point as most music AI models render chorus section in away that affords crossfades. THAT ASSUMES that you keep the chorus sections with a gap less than about 60 seconds with 30 seconds exention as it can only see 90 seconds of the music track (or something in that range)
If you have lyrics in your conditioning then you usually can use a [Chorus] section as your loop point as most music AI models render chorus section in away that affords crossfades. THAT ASSUMES that you keep the chorus sections with a gap less than about 60 seconds with 30 seconds exention as it can only see 90 seconds of the music track (or something in that range)