I think it's fair to say that most music and SFX tracks that are available on roll20 weren't designed to be looped dozens of times as background music. As such, many of them suffer from: - Long build up/lead in times - Parts of the track that dramatically crescendo or decrescendo - Long hanging outros This makes most otherwise perfect musical tracks unusable, as the lulls lose all the energy or a sudden spike in the song throws off the mood. If we could set beginning and ending points in a track for looping, it would increase the number of usable tracks dramatically for me.