I was working on a song, last night, and everything sounded perfect. The last thing I did after saving the song was to Save Special as a WAV file. When I open the song (not WAV file) in BIAB [Band-in-a-Box® for Windows Version 2024 (1102) 64 bit application] and pressed play - it started the beats and then started the song (as normal), but then it started the beats and song again over the song that had started a few seconds earlier (2 songs playing at once). Why is this happening and how do I fix it?