This isn't so much a question about troubleshooting as it is a question about best practises for handling recorded tracks, i.e., the 'sample track'. Is there any way to route the audio from a sample track to the FX mixer? It seems like LMMS only allows sample tracks to have their own, isolated fx chains. This seems like a serious limitation, and treats recorded material as 2nd class to midi (which I generally do too, but occassionally I'd like to import recorded material and have it interact with the midi-driven audio). My workaround is to just load audio in the audiofileprocessor and assign them all to a common FX channel, but this gets kind of tricky for multiple long segments that should really be handled together.