Waveform viewer for editing in QuickTime?

Hi,

I'm importing voicemail audio from my cellphone via QuickTime Pro. Everything is working fine, except that it's a bit of a pain to select each individual voicemail from the saved audio stream, which contains the prompts, "press '1' for next message", etc. I was wondering if anyone knew of an add-on to QuickTime Pro that would offer a waveform display in addition to QuickTime's timeline slider, as it would be much easier for me to delimit the selection markers if I could visibly see where each audio portion started and ended. I know that I could export the .mov audio files to a different format and then use something like CD Spin Doctor to view the waveforms, but for the sake of convenience, I'd rather not get involved in multiple file formats.

Thanks,

Ken