I run a site called media.io where you can convert audio files online. media.io uses many Open Source software packages like oggenc, ffmpeg, mplayer, wavpack... and soon vlc to convert tracker formats.
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Looking forward to adding VLC to the list of tools I use.
JFTR: On my desktop boxes I use Exaile as my music player though because I like having more than one playlist.
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Cheers
Johann