wmp does most of that. only thing it doesn't is delete duplicates. there's an option to scan your pc for music etc, and automatically add it to your library. to add missing media info, just right click the album name, click find album info, type the album name, click next and click OK. simple as that. as for volume, i think you mean volume normalization? all of the song is adjusted to the same volume? i rip my cds to 320kbps mp3, use mp3gain on them http://mp3gain.sourceforge.net/ and encode them to 128kbps WMA from that. works fine for me, and the quality/size is decent. mp3gain also supports batch normalizing, you can normalize tons of songs at the same time. wmp has it's own auto volume levelling but for me it decreases quality... mp3gain doesn't so may as well use that.