Just did my first A350 BA flight to and from DXB, and found it a pleasant ride. However one thing I noticed was that I was unable to put together my own audio playlist. I initially assumed that it was simply me being a total cretin on the outbound, but I had the same issue again on the inbound. I simply could not figure out how to create my own playlist. If this is the case, then it's a shame, because I really liked that feature and it's something that I've seen on all other entertainment systems on BA- even the crappy old ones. I know it's probably quite niche and most people don't care one way or the other, but it would be a downgrade from my perspective.