Good but could be so much better

I love the fact that I can access songs on my Synology server from almost anywhere and that performance has been very reliable even when on a road trip. However, I really am disappointed by the continued lack of support for M4A files(it is an open source format) and that the search function performs poorly and lacks flexibility to filter my collection by release date or date added.

Brainmusic Cube about DS audio, v5.11