Greg -
"Something catchy first...it's the only one the festival organisers will listen to"
That's true but for the same reason it's a bad idea (as discussed in an online forum somewehere recently, maybe here) to use a full length album as a demo anyway.

Because we have such a variety of settings (different instruments, songs in Welsh etc) and because organisers have an attention span of about 20 seconds, our demo is nine tracks of very short excerpts.

Spot on about leaving things out if they don't fit. We left out a terrific pair of tunes because it's pure ceilidh band and just didn't fit, and a couple of others that either weren't appropriate or there simply wasn't room for.

Pavane - it's perfectly possible to make a CD with track numbers that change in the right place with any discontinuity in the recorded sound. The CD of Pink Floyd's "Dark Side of the Moon" does this, though it misses some track changes so the numbers don't match the booklet - oops! I made a CD of the Song Links concerts (for private consumption by the participants) that had tracks without gaps too.

Anahata