Well, AMPlayer isn't made to play sfx, so no. But I think anyone with ceratin porting experience can convert into a song and sfx back.
Edit: Oh and I forgot. I'm working on the AMK compatible version of AMPlayer. I think I will just add AddmusicK support on the player and optimize a few things instead of creating a new player (in that case, AMKPlayer).
Really a weird bug.
Anyway, I'm planning a total rewrite once AddmusicK gets released, since the tool is a little too buggy and tricky for me, but thanks for reporting it. Probably soon or later I will release a new version with bug fixes.
Unfortunately, I disagree with you.
When I make my custom music, I always open both Notepad++ and AMPlayer.
After I changed the TXT, I just click "Restar" button, then I can hear the results instantly.
AMPlayer is also allow user to see how the mml works.
Also, AMK's porter mode is faster since it doesn't insert the song into the game; it just generates an spc with it (almost?) instantly, and depending on your computer it can play it at the same speed in your spc player, if you've associated the files to the program, of course.