In a regular Mac OS X installation, iTunes is set to open .m4a .mp3 .aiff files (etc.). I would like all audio formats to be open with Quicktime by default. The only solution I know is to find all the possible file formats on your disk and select "Open with…" in the Finder info window (and set by default). This is quite boring because there is a lot of extensions (formats) available : .mp3 .m4a .aiff .wav etc.
Isn't there any easy way to simply set Quicktime as default player for all audio formats ?