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The MD5 pack LL2MP3
Flac & Ape to MP3 converter
Directory Sizes    
Continued Fractions Easter Sunday LL2MP4
Lossless & MP3 to MP4 converter
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Disclaimer: All the programs are free. They come without any warranty. You are using them at your own risk.


MD5 PACK

MD5 signatures can be useful to verify the integrity of files, e.g. after copying. The two free utilities in the MD5 pack allow you to make and check signatures in an easy and fast way.
Detailed information is available on the MD5 pack page.

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LL2MP3 (Flac & Ape to MP3 converter)

This free frontend combines a FLAC to MP3 converter with an APE to MP3 converter. The tags present in the lossless audio files are transferred to MP3 files.
More information is available on the LL2MP3 page.

The older frontends processing FLAC only and APE only are still available as well; they are not updated anymore. Use LL2MP3 instead.

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LL2MP4 (Lossless & MP3 to MP4 converter)

This free frontend converts the lossless audio files FLAC, APE, and WAV plus lossy MP3 files to AAC files. It then either wraps the all the AAC files in one MP4 file or converts them separately into MP4 files. The tags present in the audio files are transferred to MP4 files.
More information is available on the LL2MP4 page.

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DIRECTORY SIZES

This is a useful tool that displays an overview of subdirectory sizes in a selected directory. It features a colored bar graph of the values found. The list of subdirectories can be sorted according to name or to size. Useful to find out where all the free disk space has gone you thought was still left! Try out the version 1.5.0.16 (228,041 bytes)! Take a look at a screenshot.

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CONTINUED FRACTIONS

Continued fractions are fun if you want to find two whole numbers which, when one is divided into the other, give a good approximation to a certain rational number. Take for example the number PI. It is known to numerous decimals: but by which two numbers (other than 22/7) can it be approximated with good accuracy? Take a look at the Continued Fraction Program.

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EASTER SUNDAY

Did you ever wonder how the calendar makers knew when exactly Easter Sunday would be a certain year? Well, perhaps they make use of my little Easter Sunday program that finds for you the date of that day for any year of the Gregorian Calendar...

The algorithm I use is derived from the famous Gauss formula, published in 1800 (Von Zach's Monatliche Correspondenz 1800, pp 121 and 223). The calculation is an implementation of the method given in:
W.E. van Wijk "De late paasch van 1943", The Hague, 1943.
Proof of the Gauss formula has been given by many authors, the most recent of which mentioned in Van Wijk's book is:
H.L. Vernhout "De berekening van het Paaschfeest volgens de formule van Gauss", Groningen, 1920.

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