Refer to our Program Overview page.
If you want to use Windows Media Player or other DirectShow capable applications to playback MPC files, you need to install the MONOGRAM DirectShow Decoder and Splitter which can be downloaded from the Windows page.
Check if libmpcdec is properly installed first (if the package uses libmpcdec). You need to install it where the other libraries are. "./configure" will install it inside "/usr/local" but most of the time it's wrong, so use "./configure --prefix=/usr" when your libs are in "/usr/lib" and headers in "/usr/include".
If it still doesn't work, then it's a genuine bug that you should report.
Yes and no. If you compare one song encoded as MP3 with 128 kbps (like some people still do...) to another one encoded as MPC (with --standard / --xtreme / --insane), the MP3 file will be smaller. But if you try to reach the MPC's quality with an MP3 encoder, you would have to use LAME's --alt preset standard / extreme, or even insane (320 kbps), which still might not sound as good as the (smaller) MPC file. Examples for Musepack being indistinguishable from the source and LAME (with up to its max setting) as well as AAC and other codecs being distinguishable, can be found here.
Additionally, Musepack's --standard, --xtreme and --insane settings produce smaller files or at most, files equivalent in size to LAME's equivalent settings (--alt preset standard / extreme / insane)