[Defy Android Development] AEON.de:
I wasn't addressed but here we go:

Starting playback of an MP3 from Root Explorer with a Motorola S9 connected:

07-20 18:53:24.699: I/ActivityManager(2503): START {act=android.intent.action.VIEW cat=[android.intent.category.DEFAULT] dat=file:///data/11 - Peace of Mind.mp3 typ=audio/mpeg cmp=com.google.android.music/.AudioPreview u=0} from pid 6312
07-20 18:53:24.801: E/WVMExtractor(2173): Failed to open libwvm.so
07-20 18:53:24.808: D/TIOMX_CORE(2173): Found component OMX.TI.MP3.decode with refCount 0 pHandle (0x2a05aca8)
07-20 18:53:24.808: D/OMX_MP3(2173): OMX_ComponentInit():216 Entering OMX_ComponentInit
07-20 18:53:24.918: I/AudioService(2503): AudioFocus requestAudioFocus() from android.media.AudioManager@413776b8com.google.android.music.AudioPreview$2@4136fc00
07-20 18:53:24.941: D/AudioHardwareMot(2173): doRouting devs: stereo 0x2, mono 0, input 0. Chose speaker Speakerphone (gain 0xb) mic None (gain 0x1c1c)
07-20 18:53:24.941: D/AudioHardwareMot(2173): Output 0x2a009be0 exiting standby
07-20 18:53:25.004: I/ActivityManager(2503): Displayed com.google.android.music/.AudioPreview: +237ms
07-20 18:53:25.011: W/AudioPreview(6668): empty cursor
07-20 18:53:26.480: D/dalvikvm(2714): GC_CONCURRENT freed 748K, 27% free 9604K/13123K, paused 32ms+5ms, total 86ms
07-20 18:53:34.019: D/NetlinkEvent(2164): Unexpected netlink message. type=0xecc0
07-20 18:53:40.754: D/AudioHardwareMot(2173): Output bufSize from kernel = 8192
07-20 18:53:40.777: D/AudioHardwareMot(2173): Output bufSize from kernel = 8192
07-20 18:53:40.800: D/AudioHardwareMot(2173): Output bufSize from kernel = 8192
07-20 18:53:40.824: D/AudioHardwareMot(2173): Output bufSize from kernel = 8192
07-20 18:53:40.840: D/AudioHardwareMot(2173): Output bufSize from kernel = 8192
07-20 18:53:41.996: D/OMX_MP3(2173): MP3DEC_LCML_Callback():2580 stop ack. received. stop waiting for sending disable command completed
07-20 18:53:42.011: D/TIOMX_CORE(2173): Found matching pHandle(0x2a05aca8) at index 7 with refCount 1
07-20 18:53:42.027: I/AudioService(2503): AudioFocus abandonAudioFocus() from android.media.AudioManager@413776b8com.google.android.music.AudioPreview$2@4136fc00
07-20 18:53:43.722: D/AudioHardwareMot(2173): AudioStreamOutMot::standby called
07-20 18:53:43.722: D/AudioHardwareMot(2173): Output 0x2a009be0 entering standby
07-20 18:53:43.722: D/AudioHardwareMot(2173): Closing Output device
07-20 18:53:50.486: D/NetlinkEvent(2164): Unexpected netlink message. type=0xecc0
07-20 18:54:06.951: D/NetlinkEvent(2164): Unexpected netlink message. type=0xecc0
07-20 18:54:17.105: D/dalvikvm(3984): GC_CONCURRENT freed 1789K, 30% free 9276K/13123K, paused 24ms+32ms, total 131ms

Playback happens via Defy Speaker, not Headset. Handsfree calling works with headset, only A2DP doesn't.

Here is a logcat for playback with a cable headset, for comparison.

Device is German Retail Defy+ on latest CM10 D+ build. (Kernel is from 2.3.6 German Retail Update SBF I think, not sure)

//Edit: AVRCP (Audio Video Remote Control Profile) does not work perfectly either (worked in ICS just as Stereo playback did): the track forward and back buttons on headset do work. Play/Pause button only starts playback, but does not pause it.