Combine lots of mp3s into one file. They will be combined in alphabetical order so prepare the filenames ahead of time with leading zeros if needed (e.g. whatever-01.mp3 whatever-02.mp3 ... etc)
mp3wrap combined.mp3 origs/*
Strip out all the media track id3 tags from a file (useful after combining with mp3wrap)
id3convert -s file.mp3