Winamp auto-tag alternative on mac os.

So, I'm really happy with my new laptop - macbook pro. I really enjoy it, and everyday I learn smth new.
Few days ago I collided with a problem, I've got some mp3 files without tags (it would be really painfull to tag them all by my self), in Windows based machine it's simple, you open them in Winamp and sent to auto-tag feature, and it's done. On the Mac (I use Snow Lepard) they does not have an Winamp. So I've made an reasearch in that, and found a solution.
it's MusicBrainz Picard. It's really easy to use, and it's very good. (work for me :) )

Unit Testing.

This is great video from Google about Unit Testing:

I really want to start doing UT in my code.

Yes, it's time consuming(it seems like this at first :) ).

Yes, the amough of code is approximatelly the same as your original code.

But hey, then you have unit tests you can easily know that all your classes and etc works correctly, you can easily catch bugs, you can easily reproduce the bugs latter.

And in the end it really helps to save time after you finish your product, because it's tested already in some cases, and if some bug happens you can easily write a test for it and see what will happen, Then you exactly will know what went wrong.