as I said in title, I need software that can convert lots of audio formats to wma based on bit rate of original audio files.

For example: i have mp3 64kbps, aac 128kbps and mp3 vbr 192kbps files. I want to convert them to wma files with same (or similar) properties, without having to set different options every time (since i have 20GB of music i wanna arrange :)

I used Microsoft's converter from Windows Media Bonus Pack earlier, but it's not supported in Windows Vista. All other converters that i tried don't have 'dynamic output files', they use same settings for any input files. So instead of having smaller file with same quality, I end up with few MB bigger wma file (in most cases)...

Anyone knows some application I could use for this?

Tnx