Negative splitpoints have been added in the latest development version as, so now you can cut the last XX second of the file. Just use EOF-min.sec[.0-99].
The following example shows how to split the last 15 seconds from all .mp3 files in the directory and its nested subdirectories:
Code:
find ./ -name '*.mp3' -type f -exec mp3splt {} 00.00 EOF-00.15 \;