The sound bite is not so good. It is supposed to end with a [əð] pronunciation in the sound bit. You can also pronounce it with a [ət] ending, but it is more normal to hear the soft d in the end. This goes for a lot of words ending with -et.
Listen to this sound bit for example which is a little better: http://www.forvo.com/search/huset/da/
Absolutely not true. "erhvervet" (9 letters): [æɐ̯ˈvæɐ̯ˀwəð] (9 sounds! including the glottal stop), according to ordnet.dk. Apart from this... I do not agree regarding the [æ] being used in IPA transcriptions of Danish that often, this is just a regular [ɛ] sound, in my opinion, not different from a German "ä" as in the word "Erwerb".