I don’t know if this is well known on this forum, but While browsing today I found out that Akai offer a free download of a multisampled piano.
It appears that nearly all ‘white notes’ are available from D-0 through to C-7. Each note appears with three different dynamics (mezzo-piano, mezzo-forte and fortissimo). They are logically named wav files and loop points are already defined. I mapped them across three different instruments (for the three different dynamics) reasonably quickly.
It is called ‘Akai Professional Piano’ and is around a 100mb download.
It is linked from the ‘MPC5000’ page on Akais website here under ‘Docs & Downloads’.
Direct link to archive here. I don’t know the redistribution rights (undefined) so I have not uploaded any premade XRNI files.
It sounds pretty good for a free download