As I'm not regularly using wakeup music I just stumbled about a little bug in SleepAnalyser's handling of music files. No matter which file in a given directory it selects for wakeup music, its duration is always counted with 5 minutes. When current track is shorter than 5 minutes there is a lap of silence until alarm goes off and when track is longer than 5 minutes it cut off by alarm. Might it be related to CSSU or OpenMediaPlayer? I just flashed my N900 and freshly installed everything but behaviour is the same.