MAME Languages.ini v0.148u4 is released. It supports file for MameUI, which attempts to catalog all of the MAME sets based on the language used by the game.

MAME Languages.ini v0.148u4 Changelog:
* 0.25 0.148u4 02/05/2013: Added sets of the 0.148u4.
* 0.24 0.148u3 11/04/2013: Added Polish and Slovak languages; fixed some Japan, German and English entries.

Download: MAME Languages.ini v0.148u4
Source: Here