If you want to compress your graphics files for loading from sd card on the Next I have a little app to run-length encode them.
It compresses all the 0xe3, the transparent areas of the graphics.
To uncompress the graphics:
If byte=0xe3 the next byte is the length-1 so 0=1 and 255=256 so fill memory with 0xe3 for length+1
If byte!=0xe3 just copy the byte to memory
Some of my test on my graphics got me a %50 saving on card space.
It's written in C# and I've included the .exe for windows users and include the .cs so people can compile it for other platforms.
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