Eu vou pegar o fone para ouvir o áudio da apresentação.

Yes, you often can leave it out.

Portuguese verbs usually show who the subject is, so vou pegar already tells you the subject is I. That means:

• Eu vou pegar o fone...
• Vou pegar o fone...

Both are natural.

Learners often see eu more often in teaching materials because it makes the subject extra clear. In real Brazilian Portuguese, pronouns are often omitted when the meaning is obvious.

Vou pegar is the very common near future / simple future idea built with:

• ir in the present tense + infinitive

So here:

• vou = I go / I am going
• pegar = to get / to take

Together, vou pegar means I’m going to get / take.

This is one of the most common ways to talk about the future in Brazilian Portuguese, often more common in speech than the single-word future form.

For example:

• Eu vou ouvir = I’m going to listen
• Ela vai chegar = She’s going to arrive

Yes, pegar can literally mean to grab, but in Brazilian Portuguese it is also used very broadly for things like:

• get
• take
• pick up
• sometimes even catch

In this sentence, pegar o fone most naturally means something like:

• get the headphones / earphones
• pick up the headphones
• possibly put on the headphones, depending on context

So this is a very normal everyday use of pegar.

Fone is short for fone de ouvido.

Depending on context, it can mean:

• earphones
• headphones
• headset

In everyday Brazilian Portuguese, people often just say fone instead of the full expression.

A few related forms:

• o fone = the headphone/earphone device
• os fones = the headphones / earphones
• fone de ouvido = earphone / headphone
• headset is also used in Brazil, especially for computer/gaming contexts

So pegar o fone is a very natural casual phrase.

Para + infinitive is used to show purpose: in order to, to, so that someone can.

So:

• para ouvir o áudio = to listen to the audio

It answers the question why?

• Eu vou pegar o fone — Why?
• Para ouvir o áudio da apresentação.

In spoken Brazilian Portuguese, para is very often shortened to pra:

• Eu vou pegar o fone pra ouvir o áudio...

That sounds very natural in conversation.

Both ouvir and escutar can mean to hear / to listen, and in many situations either one works.

A useful general idea is:

• ouvir = hear / listen
• escutar = listen, often with a sense of paying attention

But in real Brazilian Portuguese, the distinction is often not strict. In this sentence, ouvir o áudio is very natural and probably the most common choice.

Examples:

• Vou ouvir música. = I’m going to listen to music.
• Escuta isso! = Listen to this!

So here, ouvir is just the most normal everyday wording.

Portuguese uses definite articles much more often than English.

Here, o áudio means the audio. The speaker is referring to a specific audio, not just audio in general.

So:

• ouvir o áudio da apresentação = listen to the audio of the presentation

In English, we might sometimes say just listen to the presentation audio or even listen to audio from the presentation, but Portuguese often prefers a structure with articles:

• o áudio
• a apresentação

Also, áudio is a masculine noun, so it takes o.

Da is a contraction:

• de + a = da

So:

• o áudio da apresentação literally = the audio of the presentation

This is extremely common in Portuguese. Similar contractions include:

• do = de + o
• na = em + a
• no = em + o

So da apresentação is just the normal contracted form.

Because apresentação is a feminine noun in Portuguese, so it takes:

• a apresentação
• da apresentação

Many nouns ending in -ção are feminine:

• a apresentação
• a informação
• a situação
• a tradução

This is a very useful pattern to remember.

The accent marks help show stress and sometimes pronunciation.

• áudio: the stress falls on áu
• apresentação: the stress falls on the final ção

So roughly:

• ÁU-dio
• a-pre-zen-ta-ÇÃO

The ã in ção is nasal, which is important in Portuguese pronunciation.

Also, the ending -ção is very common and usually sounds roughly like sown or song with nasalization, depending on accent and how closely you want to approximate it.

Yes to both.

Very natural alternatives are:

• Vou pegar o fone para ouvir o áudio da apresentação.
• Eu vou pegar o fone pra ouvir o áudio da apresentação.
• Vou pegar o fone pra ouvir o áudio da apresentação.

These all sound normal. The differences are mostly about:

• eu = slightly more explicit
• pra = more informal, very common in speech
• para = a bit more neutral/formal

The original word order is very natural:

• Eu vou pegar o fone para ouvir o áudio da apresentação.

Portuguese word order is somewhat flexible, but not every change sounds equally natural.

For example, this is also possible:

• Para ouvir o áudio da apresentação, eu vou pegar o fone.

That puts more emphasis on the purpose.

But the original version is the most straightforward everyday order:

1. subject
2. future expression
3. object
4. purpose phrase

So if you are learning, the original structure is an excellent model to copy.