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Subject: FYI: cd won't play
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cdrom_freebsd.c`cdrom_play_track: 
  ioctl fd=4 tag=CDIOCPLAYMSF data=( start <0:2:0> end <255:59:74> )

perror output is:
  ioctl(cdromplaymsftrk): Invalid argument

The start/end frame coordinates don't seem to matter.

Lots of these:
Apr 10 18:20:33 compound /kernel: cd0: RECOVERED ERROR info?:f0840513 csi:84,5,13,f0 asc:0,c0 Vendor Specific ASCQ field replaceable unit: 83 sks:c4,ed
...
Apr 10 18:24:12 compound /kernel: cd0: ILLEGAL REQUEST asc:24,0 Invalid field in CDB
Apr 10 18:24:16 compound last message repeated 12 times

This is a difference between a March 14 and April 8 current kernel.