Wavesplitter, when I've used it, has a tendency to split tracks that don't need splitting - it seems to pick any momentary silence as a signal the song is over, even pauses between verses. This may have been solved in a more recent version - but I've found it quicker and more reliable to do as treewind suggested, and deal with individual tracks. Or sometimes to record a whole side of a tape cassette on to Goldwave, and then pull them out one by one "manually".