Профессора обсуждали учебный план.

English Translation

The professors discussed the curriculum.

Pronunciation:

Профе́ссора → Профессора́
Профе́ссора is the genitive/accusative singular, while Профессора́ is the nominative plural (which is what we want in this sentence).

English Translation

The professors discussed the curriculum.

The audio makes the same mistake.