My WAS6050 Wireless Audio System says: 'Kan trck(s) niet afsp.' ('Cannot play tracks'), if I try to access the audio files (MP3 or WMA) stored on my Synology NAS (Network Attached Storage) device. The display of the WAS6050 shows that the WAS6050 can find each individual audio file on the Synology NAS, but cannot play them. Amazingly, however, it does play the same files if stored on my PC (Windows XP SP3, with TVersity installed). Maybe even more amazingly, both my Philips NP2500 Streamium Network player and my Philips 37pfl8404 TV can play the audio files from my Synology NAS without any problem. What to do now????????