Codec advanced streaming format (ASF) nicht unterstützt (not supported) when trying to play music in "Medien" (Media) App

REPRODUCIBILITY (% or how often): 100% (but not every file)
BUILD ID = OS VERSION (Settings > About product): 4.1.0.24 (Kvarken)
HARDWARE (XA2, Xperia 10…): Sony Xperia 10 - Dual Sim
UI LANGUAGE: German/Deutsch
REGRESSION: (compared to previous public release: Yes, No, ?): No - never worked properly

DESCRIPTION:

Some (a lot) music files (synced with windows media player) will not play. Instead the message “codec advanced streaming format (ASF) nicht unterstützt” (“codec advanced streaming format (ASF) not supported”) will be shown in the top of the screen. I am using “Medien” app (Media?).

PRECONDITIONS:

STEPS TO REPRODUCE:

  1. Open Media app
  2. go to affected song and click on it in order to start playing
  3. Song won’t play, instead the message “codec advanced streaming format (ASF) nicht unterstützt” (“codec advanced streaming format (ASF) not supported”) will be shown in the top of the screen.

EXPECTED RESULT:

play song

ACTUAL RESULT:

Song won’t play, instead the message “codec advanced streaming format (ASF) nicht unterstützt” (“codec advanced streaming format (ASF) not supported”) will be shown in the top of the screen.

ADDITIONAL INFORMATION:

(Please ALWAYS attach relevant data such as logs, screenshots, etc…)