I use PyMedia and mutagen. I've found PyMedia to be excellent for creating custom mp3 files from line input and performing frequency/energy analysis. I can't say that I've tried to convert other audio formats to MP3 with it, but I'm sure it's possible. I was able to get a working binary of v1.3.7.3 for win32 and python 2.5 directly from the author, since I have no way to compile it from the source that's posted on the project website. If you need it, let me know.
On the other hand, mutagen is a good lightweight utility for extracting and modifying all kinds of audio metadata. On mp3's, that includes track duration, all ID3 info, bitrate, sample rate, etc. It provides an easy dictionary-like interface. It supports a number of audio formats, but I don't believe it has conversion capability. Cheers, -Basilisk96 -- http://mail.python.org/mailman/listinfo/python-list
