I'm still very new to Lunar Magic and It's a great program, I was very excited to start making a SMW Rom Hack for my very first time, I remember all those good times I actually was a failure when I got my first attempt on making a level with Lunar Magic, back in 2013, or 2010 or so. I used AddmusicK as for my resource of adding Custom Music to My ROM hack, Simply Sampled Music is Okay, but Every time I try to add Custom Music with Custom Samples, It just gives me this one error that says "The specified sample was not included in this song." How do I fix this?
Okay, are the samples in the folder "NSMBWVolc" which itself needs to be in "samples" (that's what M A R I O W O R L D talks about)? If so then I don't know it further because that's as far as I can think without any pre-information. It would be nice where you have put the samples at all so we can see your mistake.
If you don't exactly know, where to put the folders, in a rule of thumb, if samples in a .zip file are located in an own folder, you have to copy the whole folder to "samples" unless the name of the folder with samples is "samples". In that case or when there is no seperate folder, the samples must be put the folder "samples" without a subfolder.