Convert MP3 file to WAV in Mac Mini


can some one show me how to convert mp3 file to wav or other format in Mac Mini?

Thanks
houstonreef
Thanks All, beside wav, what formats is the best in comparision to wav. To my ears, wav is sonicly better than mp3.
besides wav, to save space you might try flac or aac. i'm not really familiar with macs so maybe somebody can chime in regarding the appropriate formats.
houston,

Formats:

WAV and AIFF should sound identical to the orightincal CD. both are 1 to 1 copies of original (if CD). in iTunes, AIFF has the advantage of linking cover art -where WAV will not allow that.
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"Apple lossless" will be nearly identical to the original but will be about 60-70% file size.
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AAC is a compressed so data is thrown away. In a system that is very detailed the 320kbps setting soundsvery good. the 128bps sounds OK.
On a MacMini in iTunes, your best bet next to WAV is Apple Lossless. Supposedly it is a lossless compression scheme (so no data is lost), while, as already pointed out, it takes up practically half the space of a WAV file. If you want to find out which is best for your system+room+music+ears just rip a few different cuts in the various formats and have someone else play them back for you taking note of your observations to see if you can tell the difference...or just play them back yourself.
Houstonreef, are you saying that a WAV file of an MP3 source sounds better to you than the original MP3?
Forgive me if I am stating the obvious, but it's the quality of the source material that defines how good any given file format (native or lossless) will sound. Furthermore, MP3 and AAC are lossy formats which subtract data from the full resolution source. Ideally, you should rip from CD to WAV, AIFF (for Mac), FLAC, or ALL (for Mac). The last two are lossless compression formats, and are bit perfect.