From a quick Google search, I saw a lot of people reccomending software that was either for windows or just didn’t look particularly inviting. This is a brief explanation of a free soloution.
Whatever reason you’ve got, on any recent mac it’s pretty easy to do this with a pretty easy to use free peice of software.
Head over to Google Code Project page and download the latest release. The file at the top of the list should work fine.

When the file has finished downloading, the extracted file should contain a few folders, readme files and an OSX Application. Go ahead and move it wherever, or just go run it where it is.
When you first launch XLD it seems like nothing is running, but check your dock and it’s clearly there.
Select XLD in your dock and head up to the preferences screen.

By default the Output format is set to WAV so change this to your choice format.

XLD can also automatically add the converted files to itunes, just select the option towards the bottom for the screen.

There are 2 ways of selecting a batch of files, I’ll start with the easiest; Open up a finder window with the files you want to convert, select the files you want to convert then simply drag the selection into the XLD icon in your dock!
Too Easy.
Alternatively you can head to the OSX Toolbar, select File and then open and find the files that way.
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Thank you!
Best solution by far.
Had the same experience looking for software to do this.
XLD is perfect for converting FLAC to M4A Apple Lossless.
fly At Nov 26, 06:58 AM *