I received the file from you, thanks. Unfortunately, I can't reproduce the problem here, it imports and plays fine on my system (OSX 10.7, MC build 207). Can you try these steps and report what happens:
1. from the main menu: File / Play Media File...
2. select file "NY2009-04-13d1t02.flac"
If it fails and the file is on a network drive, try copying the file to your local drive and retry the same steps.