Software for working with audio in Mac OS

Sometimes I have to take to creating advertising for radio and I record podcasts for yourself. For post-processing in my Windows I used 2 programs: WaveLab (the process recording normalization, filters, effects, bass, cutoff frequencies, which theoretically could not record the microphone, etc.) and Adobe autdition (for information paths, automatically eliminate noise, normalize volume levels, to compile in variable bitrate mp3, etc.). Google suggested that both programs are EXPECTED under Mac OS 10.5.x 10.6.x (Intel), but are not yet available.
Almost got rid of the laptop under Windows, and I want to do now on the MacBook. Tell me with what FOR you to do the same? It is desirable that the time relearning to reduce to the shortest interval.