Though this is one of the best plug-ins, ever, it still has some major problems, most related to matroska and subtitles. Hopefully those will be corrected in the next update.
For example, subtitles cannot have their size altered, and what should be a single line of text, becomes 4 lines of giant text that covers more than half the screen.
I tried to address this on the boards, but if you have any kind of vision problems, you cannot register... (captcha is INFINITELY easier) it's very unfriendly, and there is no way to report this to anyone. There is no contact information anywhere that does not require you to register first. I'm hoping that this will be seen here, at least.
So, for the next update, I'm hoping there will be basic subtitle typeface and size selection in the prefpane.

Somebody said this is platform independent. Not even! It won't work on non-Intel machines and hasn't for a very long time. If I wanted an Intel machine, I'd have bought one.
Even though I can't use this, I applaud the effort to break away from M$.

No matroska conversion function (that works), no test, no sale. (sorry)
The only video conversion still needed for the Mac must convert FROM matroska (including softsubs to hardsub support and multiple sound streams) consistently, and allow quantizer settings (none do, yet... most fail miserably and output looks look terrible as well), and a matroska recoder would be a nice thing to see, as well.

The download and author's links are no longer viable. The page has been long removed, and there appears to be no way to download the file from the site (404 error). The links currently take you to the "Colors Magazine" website of the Benneton Group.

I tried sending this to freeverse's e-mail... but it doesn't pass their "spam filter." And since I was quite impressed, except with the following, So:

I tested the new 3.6 version to see if it would suffice for my needs (I currently require four apps in my chain of work with lossless audio clips). I'd like to reduce that to two...

1. it still destroys ID3 tags: even Apple standardized (i.e., it destroys "show"). Apparently anything not in the info drop-down is killed. It should pass everything through that doesn't appear in that drop-down (this is actually a deal-killer).
2a. There's an odd behavior that happens about 90% of the time with ALAC files. It doesn't seem to recognize that the files were opened from ALAC (apple lossless) files and it attempts to "Save" them as lossy, bringing up an "AAC Options" dialog box. If you choose "Save as…", instead, this is avoided.
2b. After hitting "Cancel" on the "AAC Options" dialog box, SS does a drop-down dialog that states “The document "xxx.m4a" could not be saved.”, and then it wants a click on an "OK" button to continue. Kind of obvious when the user cancels the request. i.e., this drop-down after the cancel should be removed from the program entirely.
3. Normalize should be a one-click process. I'm pretty sure that most people stay with the same settings on an entire project or their entire lives (^_^). The normalize level and options should be relegated to preferences or a menu item.
4. It's really minor, but the dB field does not update the percentage automatically in both the "Normalize" and "Amplify Volume" dialogs. The value should be recalculated on "field change." This value is carried over properly the next time you open said filters, but, you've already had to have executed it. (I don't actually use this readout, but I noticed it was doing it this way.)
5. Really a very minor thing (but until I get a program that doesn't destroy tags, it'll be an issue with our files). Even if dragged-and-dropped onto the icon/dock, SS will not recognize a file if it ends with a non-stamdard extension. It still opens an empty window, but it halts all other activity while it waits for a click on the "OK" button, in the "Could not open this file," dialog. Since all our files are MPEG4, and some are provided in lossy forms, we've been using .m4aL, .m4a3, m4a1, etc, which works real well with our current programs on both Mac and Windows.
6. There still seems to be some sort of memory leak that causes a sudden crash. Couldn't figure out where, but it did a sudden disappearance leaving gigs of files lying around when it did… This was after about an hour worth of testing.
7a. There appears to be a display problem in the overall waveform display (the top one). At the end of all of the files I gave it (where there was silence or near silence), the overall display actually showed bursts of sound after the decay, in the area where it was silent. This was consistent with every file I gave it. This is cosmetic, but confusing. And the scrolling window (bottom) showed proper silence at the same point.
7b In the Scrolling waveform, after some normalization or amplification filtering, the waveform would be distorted into the negative dB area, or spiking severely down into it. The audio sounds fine, but there is no way the actual sound waves in these clips were entirely and significantly below the 0dB mark (which is where several of the waveforms were being displayed after amplification). On the next version I test, I'll try to remember to do a couple of screen-caps to demonstrate this.

See you at the next upgrade :)

P.S. Sound Studio is way ahead of Fission (the other program I tested over the weekend)... Files I trimmed small bits from and resaved, always came out smaller in SS, in Fission, the same files actually grew in size averaging about 700k of "growth."