Unfortunately, Mixcloud only presents the last 10 Ambientblog mixes. But ALL older mixes (and there are many!) remain available from https://www.ambientblog.net. There, you can also download them (many are also available in a surround version).
If you're interested: I also host a monthly show called DreamScenes: latest 10 editions can also be streamed from Mixcloud: https://www.mixcloud.com/DreamScenes/