Gaming Music Organization

I've collected a fair bit of gaming music, to provide ambiance and mood depending on the game I run. I'm not always using my laptop, so I have a number of playlists on an old iPhone-cum-iTouch. I've included movie soundtracks, Celtic music, electronic music, popular tunes, and RPG Background Loops from Plate Mail Games (who is running a followup KickStarter to produce more gaming music and sound effects).

I'm working on just how to sort the tunes. Here are the general categories I use:

Fantasy:

• Chase
• Conflict
• Ethereal
• Long Tracks
• Pastoral
• Quiet
• Quiet Builds
• Romantic
• Sinister
• Sneaky
• Somber
• Spooky
• Tavern
• Temple
• Tense
• Tribal

Dresden Files:

• Action
• Ambient
• Club
• Dreaming
• Goth
• Hard
• Indie
• Jazz Club
• Lowlife
• Nevernever
• Ocean
• Quiet
• Quiet Builds
• Radio
• Religious
• Spooky
• Summer Court
• Winter Court
• various cultural subgroups

Background Loops:

• Environmental
• Fantasy
• Historical
• Horror
• Modern
• Ocean
• Otherworlds
• Outdoor
• Pulp and SteamPunk
• Sci Fi
• Social
• Supers

Soundtracks:

• Dreamscape
• Fantasy
• Horror
• Modern
• New Age
• Sci Fi

How would/do you organize any gaming music you might use in your RPGs? Please take my survey below: