Non è un audiolibro; semmai è un'edizione tascabile.

Here semmai means something like if anything, rather, or or rather.

It is used to correct or replace a previous idea:

• Non è un audiolibro; semmai è un'edizione tascabile.
• It’s not an audiobook; if anything, it’s a pocket edition.

So the speaker is not just contrasting two things. They are saying: that first description is wrong; this second one is a better description.

No. That is a very common confusion.

• forse = maybe / perhaps
• magari can mean maybe, if only, or sometimes I wish
• semmai in this sentence means if anything / rather

So here semmai does not express uncertainty. It expresses correction.

A rough comparison:

• Forse è un audiolibro. = Maybe it’s an audiobook.
• Non è un audiolibro; semmai è un'edizione tascabile. = It’s not an audiobook; rather, it’s a pocket edition.

Because è is the verb essere in the third-person singular: is.

The accent is important because:

• è = is
• e = and

So:

• Non è un audiolibro = It is not an audiobook
• audiolibro e edizione would involve e = and

In writing, Italian keeps this distinction very clearly.

Italian usually makes a sentence negative by putting non before the verb.

So:

• È un audiolibro. = It is an audiobook.
• Non è un audiolibro. = It is not an audiobook.

This is very straightforward in Italian:

• non + verb

Examples:

• Non capisco. = I don’t understand.
• Non è vero. = It isn’t true.

Because audiolibro is masculine, while edizione is feminine.

So the indefinite articles are different:

• masculine singular: un
• feminine singular: una, which becomes un' before a vowel

That gives:

• un audiolibro
• un'edizione

So the difference is about gender, not meaning.

Because un'edizione comes from una edizione.

In Italian, una normally shortens before a vowel:

• una edizione → un'edizione
• una amica → un'amica

But masculine un does not take an apostrophe:

• un audiolibro
• un amico

So:

• un' with apostrophe = feminine
• un without apostrophe = usually masculine

This is a very useful spelling clue.

Yes, audiolibro is normally written as one word.

It is a compound noun:

• audio
  • libro

Its gender is masculine, because the main noun is libro, which is masculine.

So you say:

• un audiolibro
• gli audiolibri

This is similar to how many Italian compound nouns behave: the gender usually follows the main noun.

Edizione tascabile means a pocket edition or, depending on context, a paperback edition.

• edizione = edition
• tascabile literally means pocket-sized, from tasca = pocket

In publishing, tascabile often refers to a smaller, cheaper, portable format.

So un'edizione tascabile is not an audiobook at all; it is a physical print edition, usually a compact one.

Because in Italian, adjectives often come after the noun.

So:

• edizione tascabile
• literally: edition pocket-sized

This is very normal Italian word order.

You sometimes can place adjectives before the noun, but the position may change the tone or meaning. In this case, tascabile naturally follows edizione.

Sometimes yes, but the meaning would be less specific.

• È tascabile = It is pocket-sized / It is a paperback-style item
• È un'edizione tascabile = It is a pocket edition

The full phrase names the thing more precisely. It tells you that we are talking about a particular edition, not just describing something as small or portable.

So the original sentence sounds clearer and more natural in a publishing context.

The semicolon links two closely related statements:

• Non è un audiolibro
• semmai è un'edizione tascabile

It is stronger than a comma, but not as separate as a full stop. It works well because the second part corrects the first.

You could also write:

• Non è un audiolibro. Semmai è un'edizione tascabile.

That would also be correct. The semicolon simply gives a smooth, slightly more formal connection.

Normally, no.

Italian usually keeps the indefinite article with singular countable nouns:

• un audiolibro
• un'edizione tascabile

So Non è audiolibro would sound wrong in standard Italian.

English sometimes drops articles in ways Italian does not, so this is something learners often need to watch carefully.