M1.XML 20110509 is released. M1.XML file for use with M1 - keeping up with changes in MAME. M1 plays the music from arcade games by running the code in the original ROMs (not supplied). This allows entirely authentic playback of classic video game tunes while you work.

M1.XML 20110509 Changelog:
5/9/2011 - 1910 Sets
Fixed a number of issues related to duplicate filenames, improperly formatted
or missing entries. This was causing difficulties when exporting to a CLRMAME
XML file.

Changed:
kodure -> kozure (0.142u2)
ptblank2a -> ptblank2ua (0.142u2)

Data Sync to 0.142u3

Download: M1.XML 20110326
Source: Here