The gif and mus files come in .zip format. Most modern OSes will open this without a problem, but you might need an unzipping program of some kind such as WinZip. The pdf files can be viewed using Adobe Acrobat Reader.
To view, transpose and print MUS files (inside the .zip files), download Finale Notepad for free.
Boku wa Tomodachi ga Sukunai NEXT
Be My Friend (Transcribed by Joshua Taipale)
Lead Sheet - Melody and Chord Symbols | pdf |
Honki no Massugu na Omoi (Transcribed by Joshua Taipale)
for piano | pdf |