[daeken]

(B2-ish Spanish learner here but) "ll" is pronounced in at least three variants that I know of: "y", "j", and something between "sh" and "ch". E.g. "llama" might be pronounced like (in English writing) "yama", "zhama", or "shama". The last one really threw me for a while; it's super common in Argentina at least.

[nwatson]

I spent time in the "Rio de la Plata" area in the late 1970s, mainly Montevideo, and learned rioplatense Spanish, and would use the ZH sound as in "meaSure" for Y/LL letters in "playa" and "calle".

In the last 40 years I've spent mostly in the USA I rarely have heard Uruguayan/Argentinian Spanish in person or in media, but was surprised to hear Messi and others in recent interviews use SH as in "puSH" for the Y/LL, this apparent has been a generational shift in that area, first in Argentina and then Uruguay. I'd sound old-fashioned if I were to go back to Montevideo these days.

[germandiago]

I see what you mean. I think you should stick to one form and learn by difference or you could quickly get lost.

"ll" in standard spanish is a strong english "y".

However, in spanish argentinian from the area of Buenos Aires (but not the argentinian Córdoba, which sounds more like colombian spanish) it is "sh", being that s something like a mix in-between of "j" and "s" + h as in "she" but the sound is a bit different.

Without being able to record some sound I cannot express it better but I am sure you can find something around. Javier Milei, the president, has such an accent.

[int_19h]

AFAIK "ll" can also be the palatalized "l" sound in some dialects, i.e. in the same relationship to regular "l" as "ñ" is to "n". Indeed, this is the original pronunciation from which all others have diverged.