I have been having problems with playlists disappearing, but did not associate it with the f'ing scan.
put .nomedia in the directory and see if that helps.
I thought it was the player I was using - justplaylists
SF Looney Tunes Bay Area, Kalifornia
1. HTC Sensation
BootLoader : ENG S-OFF
Recovery: 4EXT Touch
Baseband : 11.76A.3504.00U_11.24A.3504.31_M
Rom: AOKP Jelly Bean - Build: JRO03H
Kernel: Included with ROM 3.0.36-g7290c7f ...
2. Rooted Nexus One without power button with Super one click after downgrade, installed Cyanogen Mod 7.1. When I get it back from my sis, we will see how it likes ICS.