NEW: Albumizer v1.0
This script will renumber the track number tag of the selected tracks incrementally in their play order, as well as providing track count, disc number and disc count tags and, optionally, additional album-oriented tags.
Also see the simpler Albumize Selection or the more general Increment Number Tags.

Latest version:
- Initial release
More information for Albumizer v1.0 and download link is here.
