Like a CD or DVD/BU <.iso> image? Not that I'm aware of. The highest non-lossy resolution is still a PCM format. Rendering a <.pca> (Perfect Clarity Audio) file can reduce the file size some, but it's not cross-app compatible like a Flac or high kbp/s AAC.
Thanks for the reply, it's not a sound file that i require, but an image file. I want a high quality image of the displayed wave file. I was hoping that the image itself could be saved rather than taking a screen grab.