Is there any audio splitter applications? As I know,  there are many audio splitter software like GoldWave on the Windows platform. But I cannot find any similar applications for Mac Os.

What I want is an audio splitter which can


automatically split the audio file according to its wave, that is, it can recognize the pause automatically;
split the audio according to its lyric file.


Do you have any suggestions? I do not like to install a Windows along with OS X to use such software.
Audacity is available for Mac and can do many audio editing functions, though I'm not sure about "split the audio according to its lyric file".