Freemake is a free multimedia software developer, who develops and releases many software titles for totally free. The most famous product is Freemake Video Converter which can convert video to almost any video and device format, like AVI, MP4, MOV, MP3, iPad, iPhone, PSP, Android phones and many more. It can also rip and burn DVDs.
'youtube downloader' is pretty generic, and a search leads to a big pile of unimpressive links. Then, I'm not sure why you would mention software that 'hasn't worked for me for a while though' And (more relevant) - mcleanmuir is looking for a youtube downloader that will still work with OS X 10.4.11 Most that I see require 10.5 or higher. Youtube Downloader For Mac Os X free download - MacX YouTube Downloader, Apple Mac OS X Snow Leopard, R for Mac OS X, and many more programs.
Especially when upgrading to Mac OS X El Capitan, some apps are turn to useless. Then, it is important to choose an application which can save YouTube to MP3 for Mac perfectly. If you haven’t chosen one yet, here are some of the best options that you can have a look. Mac software for converting YouTube MP3; Online app to convert YouTube MP3.

All Freemake software requires Microsoft .NET Framework 4.0 Client Profile to work. That's why it's currently not compatible with Apple's Mac OS X.
Best Youtube Downloader Mac Os X
Two years ago, Freemake's official blog started an open discussion to talk with its Windows users about whether to develop Freemake for Mac software. Unfortunately, there is not any Freemake for Mac program released on the market.
Although Freemake advised 'There is no Freemake Video Converter for Mac now! Don't download any alternatives', what about Mac users? Buy and a Windows-on-Mac emulation software (like Parallels Desktop 10 for Mac - $79.99), and then anytime when need to download or convert videos, you switched to Windows?

Make it simple. Just download Wondershare Video Converter Ultimate for Mac. It helps you convert video, download video (e.g. YouTube), rip DVD, burn DVD, edit video, all at one place. Mac 10.6 or later is fully supported, including the latest Mac OS X 10.10 Yosemite.