I just found a very powerful software that can convert so many Bible formats:
http://www.churchsw.org/2013/02/simple-bible-reader-converter.html

Simple Bible Reader / Converter is aimed to be simple, yet a powerful reader and converter to support and convert from/to all available bible formats. The software is developed with an intention of being portable and faster loading, that does not have any dependencies on the user system. It is also developed to bridge the gap between multiple Bible softwares, so that a user can choose his favorite Bible software and import / export his favorite Bible translation through this software. The software allows you to import and export from / to any supported Bible format. Please note that the file is highly compressed and it will take a while to start on slower computers.

Supported formats:

• Bibles – Executable Bibles, Zefania XML Bibles, The Unbound Bible (Unmapped-BCV, Mapped-BCVS, Unmapped-BCVS), Open Scripture Information Standard (OSIS), General Bible Format (GBF), XML Scripture Encoding Model (XSEM), The Word Bible Modules (ONT, ONTX, OT, OTX, NT and NTX)2 , e-Sword Bible Modules (BBL, BBLX), Unified Scripture Format XML (USFX), The SWORD Project1 , Verse Per Line (VPL), Go Bible, Theological Markup Language (ThML), Open Song Bibles (XMM), OpenLP.org Bibles, Bible Companion (BIB), MySword for Android, Bible Analyzer (BIB), EasySlides (MDB), MP3 Bibles, LOGOS Import (DOCX), Online Bible (OLB), PalmBible+ (PDB)

• Commentaries – XML Format, SWORD Commentary Modules (ZIP), The Word (cmt.twm), e-Sword 8.x (CMT), e-Sword 9.x (CMTX), MySword for Android, Bible Analyzer (CMT), OnlineBible Commentaries

• Dictionaries – Zefania Dictionary Format (XML), SWORD Dictionary Modules (ZIP), The Word (dct.twm), e-Sword 8.x (DCT), e-Sword 9.x (DCTX), MySword for Android, Bible Analyzer (DCT), OnlineBible Dictionaries

• Books / topics – XML Format (XML), The Word (gbk.twm), e-Sword 8.x (TOP), e-Sword 9.x (TOPX/REFX), SWORD Book Modules (ZIP), MySword for Android, Bible Analyzer (BK), STEP Modules

The site also has more than 177 bibles grouped under 78 languages in XML format that you can download and convert!
http://www.churchsw.org/p/bibles.html