Naw I think you did the right thing. The band I`m playing with at the mo aint going to well so I put out some feelers. I played with one of the bands who have been going for 10 years or so, and when the guy gave me the song list, I asked him if they played them in the same key and the same way as the recorded versions. Yes was the answer, so I cracked on.
Come the night, I found out that on 3 of the 6 songs, they played them in a different key and some of them bore only a fleeting resemblance to the recorded version. No one explained the arrangements before hand and I ended up trying to catch on to what they were doing. This strikes me as un proffesional and I bailed out after the audition.
The other bands either played songs I have no interest in playing (build me up buttercup anyone?) or were clearly not very experianced. So, you could say I am being picky or that I like playing with people who know how a band works and want to get enjoyment from the type of music I play.