Prerequisites:
libmusicbrainz and libmusicbrainz-dev >= 2.0.0
libcurl and libcurl-dev
xmms-dev >= 1.2.4 (for XMMS plugin)
bmp-dev >= 0.9.7rc2 (for BMP plugin)

Untar (congratulations, you've done that already:)
./configure (add "--enable-prefer-ape" if you prefer APE tags to ID3v2)
make
make install

This program has not been thoroughly tested yet, there are
probably some bugs and stupidity, keep the hatemails coming:
pipian@pipian.com (or audun@nlc.no)

Best of luck
Pipian and Audun
