Is there an audio player with waveform seekbar?

Solution 1:

http://nulloy.com is a player that runs not only on OS X but also Linux and Windows. I'm the developer of it.

Solution 2:

Its more of an audio editor than a player, so might not be exactly what you want, but Fission from Rogue Amoeba is an excellent tool that displays the waveform of the loaded audio file. You can zoom in and out of portions of the audio and drag the play point to wherever you wish.

Solution 3:

VirtualDJ Home Version (free)

Solution 4:

This is more of a workaround, but you can open it with the standard QuickTime player and "trim", and it brings up the waveform of the track. Menu Edit > Trim (⌘ + T)

Solution 5:

Capo

Audacity

GarageBand

SoundCloud app for Mac OS X

These programs all have different purposes. Some are commercial and some are free. Each of them will do what you want.