CHAS_M  First off, let me say that I actually do own and use this program.

Fission has a lot to like about it, but frankly I've been disappointed with the slow pace of bringing it up to a decent basic audio editor. It's main competition, the similarly-priced Amadeus Pro, blows it out of the water in terms of editing.

Fission's big selling point is that it can do lossless editing, but with editing left on such a very basic level, users quickly run into the wall.

Depending on the file format you're routinely having to edit, it's still a good value (when it's on sale via a bundle) -- but other programs like MP3 Trimmer and the aforementioned Amadeus do more for around the same price or less. I often use Fission to trim the "ends" off an audio file I recorded with Audio Hijack Pro, and I'm sure this is exactly what Rogue Amoeba had in mind for it. But a computer program working with digital audio files should be able to do more than what I could do with a razor blade back in the "tape" era.

I'm not looking for Fission to evolve into a full-blown audio editor, but a few key things like being able to join audio files, insert silence (now -- a year later -- finally addressed!), and cross-fade would bring this program up to the standard of a good utility tool for basic lossless audio editing, and justify the price.  
(Version 1.6)

MAMSTER2  I'm working on producing my first podcast, and after trying many, many apps (and having a data loss nightmare with GarageBand), I've settled on Fission for cleaning up a raw recording.

Yeah, if you look at the feature list, Fission doesn't measure up to Peak or Amadeus or whatever. That's not the point. Fission is *extremely* good at what it does. Plowing through a bunch of audio and deleting boring bits and ums is about three times as fast as Garageband. Fission is smart about keeping the selection sticky but not too sticky, and the way it handles regions of audio is smarter than the marker systems in other apps. It also has great keyboard shortcuts.

This is a fun app, and I've found it to be totally stable on Snow Leopard, which is a lot more than I can say for GarageBand. Absolutely worth the price. I have zero affiliation with Rogue Amoeba and have never bought one of their products before, I just love this app.  
(Version 1.6.6)

MARKBAILEY747  I used Fission to cut/edit about 1,000 albums and can say that it saved me so much time compared to other editors I had tried. Navigating, editing, splitting are all super slick in their implementation. I programmed my Kensington TurboMouse to instantly switch between tools to further improve the workflow efficiency. Saving files is also super fast and reliable. Crashes that rarely occurred in earlier versions are basically eliminated. Great quality software and well supported. Give it a try - you owe it to yourself.  
(Version 1.6.5)

BBOYKEN  I have been using Fission for several months. I often find myself needing to tweak voice-over tracks before dropping them into Flash and Fission has become my go-to app for this task. Fission makes it fast and easy to clip out audio segments, drop in replacement bits, and level it all out.

The interface is clean and easy to comprehend and I've never experienced a problem due to a bug. Fission has been a solid and reliable tool. I highly recommend it!  
(Version 1.6.2)

YOSHINATSU  I used to be able to split FLAC tracks with Fission.

I could split them using a cue file, and now it won't even open FLAC files...  
(Version 1.6.6)

CITRUS  One word: impressive! We had a sizable, 12 hour audio book that the likes of Final Cut Studio 2, QuicktimePro, Audacity, et al just couldn't cope with. We discovered Fission and it breezed through the edits and exports with ease. The integrated ID3 tagging just added the icing when creating podcasts and audio books. Seriously powerful piece of kit and highly recommended, certainly for it's price point.  
(Version 1.6.2)

M57  For quick slicing, dicing, and mixing things around Fission is superb. Does lack some features, but is the fast "in and out" audio editor I have used. Well worth the money if you have audio to edit. Save your fancy audio editing tasks for another app, but use Fission for all those quick edits.  
(Version 1.5.2)

RUBAIYAT  You can join files in Fission but unfortunately the method is clumsy and unpredictable.

You drag the additional files into the visualiser window. The only trouble is telling where it drops. It takes repeated attempts to get it to even drop at the end of a file and careful as you might be it still occassionally drop elsewhere, screwing up your file.

Definitely unusable for joining.

The excessive use of GUI also makes it sluggish and jerky.

It also doesn't let you edit common data in multiple divisions and doesn't have the sense to default to last entry or auto fill from the original file name.

Oddly the equaliser doesn't work on anything but the entire file, so you can't pick out a particularly flat bit, but requires you to select the entire file before it will work.

It also took me a while to work out what it was going to do when exporting. It seems to suggest that only one file will be exported and that using the original file name, which is a bit worrying if you think it is going to replace your original.

It feels still very rough around the edges.  
(Version 1.5.2)

OSXI  At this price fission fissels out. I had several serious crashes. Save your time and money for something better....  
(Version 1.5.1)

IDAVE  I'm a Musician/Producer and use all the usual app's, Protools, Logic,Reason and PEAK($599) for 2 track editing. FISSION ($32) gives me something Peak doesn't!!

The ability to open an mp3, do some quick basic edits,save and move on !!

With Peak and every other app "I" have tried there are extra steps (more time) because in Peak etc the app has to 1st convert the mp3 into raw audio only then can you do your edits (of course Peak is an AMAZING Editor) then "Save As" an mp3 and wait for it to convert again !!!!!! FISSION IS FAST, SMOOTH, EASY TO USE AND AN ABSOLUTE GIVEAWAY AT $32 !!!

Keep up the good work guys

D.L. (NYC)  
(Version 1.1.1)