Yeah I noticed that too. It appears that RYTM only recognises the first 14 characters of a file name and ignores the rest. For me this has meant I’ve had to do quite a bit of file name editing before importing cos my library is full of stupidly long names… 
This not deleting samples issue is really f*cking annoying. Sometimes it works but usually it won’t. At the moment I have 11 files in a folder which simply will not delete.
Can someone else please try to delete a bunch of samples and let me know if they can replicate the issue?