Main features of Protected Music Converter:

* Straight and easy to use interface
You can easily convert your music file with just few mouse clicks: add your music files to batch list, select appropriate output format and press start button. You can create custom profiles for output format settings or use build-in standard profiles, Drag'n'Drop, Copy/Paste from MS Explorer are also included.
* Protected music files conversion
All protected music files playable by both Windows Media Player and QuickTime Player can be converted to unprotected MP3, WMA, OGG, WAV. This is not protection removal though, software just plays protected files and places resulting sound into unprotected music file.
* Wide range of supported input formats
All music files with filename extensions listed below are supported as valid input files for Protected Music Converter: wma, m4p, m4b, m4a, aac, ulw, au, sd2, amr, gsm, adts, caf, mpeg, mpg, m1s, m1v, m1a, m75, m15, mp2, mpm, mpv, mpa, snd, 3gp, 3gpp, m4v, swa, amc, 3g2, 3gp2, drv-ms, aif, aiff, aifc, asf, asx, wm, wmx, wmd, wmz, mp3, wax, ogg, wav
* Batch conversion support
If you have massive amount of files you want to convert this software is exactly what you need to speed up the process.
* Most recent audio codecs support
Protected Music Converter uses most recent audio codecs, it internally supports WMA and OGG formats, for MP3 encoding it uses latest LAME encoder

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http://www.wma-mp3.com/protected-music-converter.html