I was taught to use 会 for ability to do a learned skill, including speaking languages. I was taught that 能 is for literal ability, so using 能 for a language would mean being physically capable of voicing the sounds required to speak the language. Can someone else chime in on this?

yes, you could use 会(hui4) instead or omit it entirely, but neng2 能 is also correct. By omitting I mean that 他说很多种语言 would also be correct.

Yeah I'm getting really confused by the use of 能，可以 and 會 in this course. I agree with you and would use 會 when talking about being able to do something like speak languages. I'm interested to hear what other users think.

能 can also used. Another choice is 得.

In this case, both are fine

Both are fine. Use 会 for skills (not necessarily skilled), and 能 / 可以 for capabilities (not necessarily a skill).

I'm a native speaker and I hardly use 能 in this context. I literally frowned when I saw the components I could choose from.

I usually heard people use 會 in this context.

I agree with you.

You are right.

Yes

It's not.

It should be used

很 means “very” here, so it is obvious that 多 does not mean just “multiple” but “many”. Without 很, I would interpret 多种语言 mostly as “multiple languages”.