Setting sample rate with Alesis IO26

There has to be an obvious solution, but I can't figure it out.
How do I get Soundtrack Pro 2.0.2 to set my Alesis IO26 to 48KHz for recording? I've changed it in the project settings and in the toolbar, but the IO26 remains at 44.1 no matter what.

That did it!
(actually, the first time I tried it, it switched to 48 KHz, but immediately switched back to 44.1 when I launched SoundTrack. But when I tried a second time it seemed to 'stick'.)
Thanks!

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