I ripped all my CD's to M4A using DBPOWERAMP. When I had trouble getting my DLNA setup to work with M4A., I used Batch Converter to create another copy of WAV files. I was able to get the folder hierarchy around artists, albums and songs to replicate but I discovered that not all the albums were convereted. For example, I have four albums under Pat Metheny Group but only two of them were convereted. Any ideas?