When I load songs that were created in Samplitude Music Studio 2013 to Samplitude Pro X3, I am getting some crackling etc on some of the tracks. Seems to be an intermittent problem. Don't want to have to re-do these tracks as I have over 40 songs with multiple tracks that I want to use on the Pro X3 version. Any suggestions?
I presume that your songs are audio files and not MIDI, and as such those recordings are all separate wave files. You should not have to redo them. If they are MIDI files, then you definitely don't have to redo anything. You may be having a memory problem, or lost ASIO buffers, or something else. I suggest that you join and post on the dedicated Samplitude Pro forum, and include more information about your setup and the files in your projects that are having difficulties.