for movies i use EMMrv (find it over in the supplemental tools section), and i recently discovered you can "bend" it to your advantage for music video .nfo's, so i have a 2nd version on my system for this purpose...here is what i do:
1) all music videos are in a folder of their own eg: "music videos/deftones - rocket skates/deftones - rocket skates.avi"
2) in your fresh EMM, add your music video folder as a TV source:
(edit>settings>tv shows>files and sources) then hit apply and ok.
after this, there is a small amount of legwork involved...
3) add any artist relevent fanart into the individual folders.
4) in EMM, under title, right click the video and click edit show>fanart tab>change fanart (manually browse) and select your fanart.
5) at the bottom left where your episodes would normally be, you will see something like "deftones - rocket skates S-01 E03", right click this, then click "edit episode", and delete the season/episode numbers.
6) click the "Frame Extraction" tab, then click "load episode", then scan through for a cool looking frame, and click "save as poster", then "OK"
7) right cliock the "episode" again, and click "edit episode" again, and you can manually add your A/V meta data if you want to (i do this) you can find the data by using a nice freeware app called GSpot:
http://www.headbands.com/gspot/
click "OK", close the software then you are good to go!
ps my nfo looks like this, and it scans perfectly fine:
<?xml version="1.0" encoding="utf-8"?>
<episodedetails>
<title>Deftones - Rocket Skates</title>
<rating>0</rating>
<season>-1</season>
<episode>-1</episode>
<fileinfo>
<streamdetails>
<audio>
<channels>2</channels>
<codec>mp3</codec>
<language>eng</language>
<longlanguage>English</longlanguage>
</audio>
<video>
<aspect>16:9</aspect>
<codec>div5</codec>
<height>720</height>
<scantype>Progressive</scantype>
<width>1280</width>
</video>
</streamdetails>
</fileinfo>
</episodedetails>
good luck!