Even though one has the odd bleat about it (6)
I believe the answer is:
Here is my best explanation:
'even though' is the definition.
(I've seen this before)
'one has the odd bleat about it' is the wordplay.
'one has' becomes 'i' (I can't justify this - if you can you should believe this answer much more).
'the odd' indicates anagramming the letters.
'about it' indicates putting letters inside.
'bleat' with letters rearranged gives 'albet'.
'i' inserted within 'albet' is 'ALBEIT'.
(Other definitions for albeit that I've seen before include "Though", "even though", "Even though", "'Even if, although (6)'", "Although, inasmuch as", "In spite of the fact that", "Although, nevertheless", "Although, despite", "A literary although" and "Although, since".)