Maybe you can help me sort out my question:   Currently I am feeding my MF V-DAC II from an Airport Express via toslink. I am mostly streaming apple-lossless material from itunes. The V-DAC and the rest of my audio chain are located ca. 7m/21 feet from my computer which is my only audio source. This setup basically works, but sound quality is not very good.   The connection-indicator led on the v-dac sometimes flickers for a short time, indicating miniature...