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Switch File Format Converter is a sound file converter for Mac. It can convert audio files from many sources into mp3 or wav format. Switch Converter is very easy to use. Just add the files you want to convert to the list, select the format you want to use, and then click the convert button.


  • Simple and intuitive interface.
  • Converts a variety of different audio file formats (including WMA, MOV, AIFF formats) into MP3 or WAV format.
  • MPEG Layer-3 encoding done using the LAME codec, providing complete control over mode and bitrate selection.
  • Wave encoding more...

What's New

Version 4.62: Release notes were unavailable when this listing was updated.


OS X 10.4 or later

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BigJohnson Member IconReview+171

Support is appalling!

Took more than a year to get an appropriate answer to my support request. I had run into some FLAC files that Switch could not convert.

The first reply (2-6-13) said "Could you please install the necessary codecs please go to this link download: http://www.perian.org/"

As if I'm supposed to rely on another developer's software to make Switch do its job!

Throughout the next year there were MANY emails sent to Nch.

On 1-22-14 I got this incorrect reply from them:
"WMA codification is proprietary of Microsoft Windows and Switch is not able to convert this type of files, even after installing the respective codecs to have he system be able to reproduce the files Switch wont be able to work with WMA files."

Really? The website says it DOES convert wma!

I emaild replied back for veification and received this answer:
"Yes, WMV and WMA are video and audio (respectively) that are proprietary of Microsoft Windows. Any other unprotected sound format is supported by Switch."

I sent them an angry email, and received this response:
"I apologize, I think my fellow agent might have made an assumption here that isn't true. Switch Mac does indeed support .WMA files as long as they are not copy protected. I've tested this with a number of files from the internet and it worked fine.

As for your file, it does not appear to be copy protected either, so it's not that. It looks like just a bug in the application, there must be some setting or encoding unique to that set of .wma files that is breaking us right now, and I apologize for that. I have opened a bug using your sample file, and if you'd like, I can add you to a watch-list so you can be emailed when a build fixing this is released. At that time if you return to this support ticket and ask for Rob, I'd be happy to give you a free upgrade to that newest version."

Stupid support staff doesn't even know which file types their apps support! This issue wasted a lot of my time, and caused a lot of aggravation.

And to date, they STILL haven't released a bug-fix!
Obviously they aren't too concerned about their software's failings.

FWIW, XLD was also unable to convert those same files. I was able to successfully convert them using iSonics, but it doesn't offer a compression setting, so I don't know which FLAC level it used.

Reply1 reply
Version 4.57

I received a reply today from Sonjoy, NCH Customer Service Team.

It says
"This is a known bug at this stage and you are on our watch list so you would be kept informed when we have a fix. Unfortunately there is no ETA on the release with this fix as yet but you would find an email on the release date."

No need to hurry Sonjoy, it's only been about FIFTEEN MONTHS since I first made Nch aware of the issue - who could possibly be expected to fix anything in such a brief period? Obviously not the software wizards in your company.

I am well aware that Nch considers this issue insignificant, my time unimportant and that my continued support is unwanted.

Rest assured I'll never again purchase any Nch crap!

Bowlerboy_jmb Member IconReview+211

As a demo, Switch provides the same full functionality as the "plus"version which you must pay for, else Switch gets turned off, i.e., its demo period expires.

The good thing about Switch is that it does a good job of converting a wide variety of formats. Among other things, I got it years ago to convert a propriety format that Olympus uses in their digital voice recorders to mp3 files. It also has a very nice batch feature which lets you convert a whole shebang of files in one shot.

The bad thing about Switch is the rather dodgy updating feature and pricing scheme. NCH makes no bones about wanting to grab your money any way they can. They don't wait until a full version number is released on a product for which very little development is done between minor. If my memory serves me correctly, if you happen to download the next incremental update, which can occur in about three-month intervals, you have wiped out the correlation between your original serial number and the .point upgrade version, and the minor tweak will cost you.

Word to the wise, if you get this software: never lose the original download and its serial number, just in case you fall victim to this unfriendly updating scheme. NCH tells you upfront—as if it's a disclaimer—that if you happen to lose your serial number, it's all your fault, and they will not bother to send you your original serial number, or they can't for one absurd reason or another, due to some alleged inability to keep track of their customer's records.

In short, then: good software, but lousy, sub-standard tech support and licensing scheme.

Reply0 replies
Version 4.57
Pe1brj Member IconReview+1

Hello All,
Please be careful, switch is no longer for free and is misleading everyone .
So MacUpdate must set it as shareware or MSH must stop this misleading.

Reply0 replies
Version 4.30
bbw7 Member IconComment+313

NCH's website has a link for a "free" version of Switch for non-commercial use; however, it is just the same trial/demo version that stops working after a while.

I installed this "free" version at one time and then later tried to use it to no avail, getting a message that the demo trial time was up. That alone was reason enough to send the app and all its little rat pellets sprinkled about my system to dev/null's-ville.

Reply2 replies
Version 4.26

I say the same.
Remove "Free" from this page and replace it with "Shareware"at least.
Besides that, Switch has worked really well on previous versions where there was a real free version


I agree! This is definitely not "FREE".

Moreover, when I just cannot QUIT once installed. I cannot Force Quit it, When I restart the system, it reappeared again. I am still trying out various means to remove this sticky BUG.

I exhort MacUpdate should review this software's claims.

Chas_m Member IconComment+451

With the advent of MediaHuman Audio Converter, I can't see any reason for this software as it offers nothing over its competitors, some of which are free.

Reply2 replies
Version 4.26

The joy of spending 30 bucks, maybe? ;-D


MediaHuman Audio Converter is terrible. Stick with the free XLD for all your audio needs.

Cerebrl Member IconComment+203

This app has worked like a gem for a while, but now it crashes every single time I try to convert a wma to anything else. I have the latest flip4mac, latest switch and the latest OS. It will convert other formats, just not wma. The only error on console is "exited abnormally: bus error". Anyone else having problems?

Reply0 replies
Version 1.52
Dom21 Member IconReview+58

Tried converting a small .wma to mp3:
"Unable to encode files in the selected format"
.mov to mp3?
"Unable to encode files in the selected format"
.aiff to .mp3?
"Unable to encode files in the selected format"
What a piece of crap!!

Reply4 replies
Version 1.40

Replying to my own comment... every time I press "Convert" Little Snitch alerts that Switch is trying to connect my computer to a website!

So is that why Switch doesn't do the simplest tasks, because Little Snitch disallows the connection?? Into the trash it went.


Switch downloads needed codecs, which is why LittleSnitch is alerting you. If you block that connection it can't convert the files, and you get that error.

I tried this and when it's allowed to connect it works perfectly, and is pretty quick too. I've been using this to convert .wma files. No issues at all.


From the website: "The free version...includes most common audio file formats."

No mention that the app has to call out from your computer to work. Any modern developer should be aware of Little Snitch. Why doesn't dev mention the app is calling out every time you use it...?


I agree with you. I know this is what it does because I was also using Little Snitch and also had the failures converting files. When I saw the dialog that it was downloading codecs I unblocked it and it worked.

atticus Member IconReview+1

I received an album of files in ogg format. First time I encountered this file type. Switch converted to mp3 quick and easy. Added to iTunes library with no problem. The user interface is easy to understand - I especially liked the feature that allows you to select the bitrate for encoding.

Reply0 replies
Version 1.40
aeroppon Member IconComment+0

Pretty easy to use. Convert wav to mp3 with no problem.

Reply0 replies
Version 1.40
Tice Member IconComment+119

What is that Internet connection the app tries to make? What's downloading? Couldn't find any documentation about it, but LittleSnitch told me about it!

Reply2 replies
Version 1.40
Rodrigo Girão

I think it is just downloading the codecs needed to read and convert the files.


Yep, it downloads codecs.

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Version 4.30
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Version 4.30
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Version 4.30
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Version 1.12
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Version 1.52
> 3 12


Current Version (4.x)


Downloads 151,639
Version Downloads 4,093
License Shareware
Date 25 May 2014
Platform OS X / Intel 32
Price $29.99
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