Compressing audio files in Macbook

I'm trying to do something new - compress audio/mp3 files to send via email or on the website. I've used the 'right click' on my mouse pad and clicked on compress file, but a 24 meg mp3 file was only taken down to 23 meg.
When I used a windows notebook I had a 3rd party software called DietMp3 which really reduced the size of the file.
Does Mac have a native program or is there a good 3rd party program to do this?
One more: Is a .wav file smaller than an .mp3?
Thanks for your help!

You could re-encode the track in iTunes at a lower bit rate.
Just change the setting in iTunes preferences to a lower fate and then select the track you want to compress. No use the Create ACC version command you will find in the Advanced Menu. The file type shown (i.e. ACC or MP3) will depend on the settings you have selected.
Basically the DietMP3 software you use was just encoding the file at a lower bit rate, that is the only compression you can do.

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Compress audio file to mp3 or aiff of 5 MB?

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only thing I can think of is "share with iTunes" and then once the file is in iTunes, compress it again there, by going to iTunes -> preferences and on the general tab, about 3/4 of the way down, click Import Settings and then set your settings to MP3 and then choose custom from the settings drop down and then choose a really low kbps bit rate. You may have to experiment, I haven't had coffee and can't do the math right now to suggest a bit rate for a 30 minute file becoming a 5MB MP3. Good luck!

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Will compressing the audio files held on my hard drive in itunes meen that they can still be played as normal and will it have an effect on the synchronization with my ipod.

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I have some audio files on my previous phone which I would like to export to my new iPhone 5. I am told that you can only import files from iTunes. Is that true? If not, how do I import files from my phone - or my Macbook pro laptop-to my phone? Thanks!

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Hello,
This is definitely an overloaded home page, but I am doing what I am told. I am working on making some of the images smaller for speed.
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I'm trying to extract audio files from my OLYMPUS Digital Voice Recorder VN-6200PC I am getting this error whenever I try to play its file type on my MacBook Pro,"The document "VN622195.WMA" could not be opened. The movie's file format isn't recognized."

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hi every body ,i am a new member in this forum.i am having a problem with my new project named audio compression and decompression.i have done this, but i didnt play the audio file after decompression ,but the size of the original file and decompressed file are same .i am using mu-law technique for compression.if anybody can know the source code of this problem pls reply.advance thanks to all

Dear baiju43,
I've faced a problem: to compress an audio file and play it back.I've heard a good news that you have already done the compression.So please be a great helper and give me the code that compresses and if you are also able to play it,both of them.
Thanks!
Regards.

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I am mystified by 9GB of audio files being listed in the storage of my 64GB Macbook Air. I have moved the iTunes library to an external HD and meticulously been through to look for audio files in finder, removing those I no longer need. I have also repaired and indexed my main disc and revealed hidden files but been unable to find any obvious places where these files might be hidden. Any ideas?

Empty the Trash if you haven't already done so. If you use iPhoto, empty its internal Trash first:
iPhoto ▹ Empty Trash
If you're using Time Machine to back up a portable Mac, some of the free space will be used to make local snapshots, which are backup copies of files you've recently deleted. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as "Backups." The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself.
To locate large files, you can use Spotlight. That method may not find large folders that contain a lot of small files.
You can more effectively use a tool such as OmniDiskSweeper (ODS) to explore your volume and find out what's taking up the space. You can also delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one.
Deleting files inside an iPhoto or Aperture library will corrupt the library. Any changes to a photo library must be made from within the application that created it. The same goes for Mail files.
Proceed further only if the problem isn't solved by the above steps.
ODS can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.
Back up all data now.
Install ODS in the Applications folder as usual. Quit it if it's running.
Triple-click anywhere in the line of text below on this page to select it, then copy the selected text to the Clipboard by pressing the key combination command-C:sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
Launch the Terminal application in any of the following ways:
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☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
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I don't recommend that you make a habit of doing this. Don't delete anything while running ODS as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance.
When you're done with ODS, quit it and also quit Terminal.

My MacBook has 30gb of audio files that I can't find

So there you can see that I have almost 30gb of audio files that I can't find anywhere. None of the folders say that it has many files.
MacBook Pro
Retina, Mid 2012
Processor 2.3 GHz Intel Core i7
Memory 8 GB 1600 MHz DDR3
Graphics NVIDIA GeForce GT 650M 1024 MB
Software OS X 10.9.4

I don't, I deleted the files from the iTunes folder.

Compressing audio files in Macbook

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