No voices?

Go through these points in order.

Is a voicepack installed?

The mod has no voices of its own. Open the voicepack screen: is your pack listed and On? Without a pack, everything sounds like vanilla.

Is the pack broken?

Broken packs are listed with the reason, e.g. a missing sound file or an invalid manifest. /tv packs list shows them too. Export the pack again from the web editor, or check the format.

Does the voice fit the entity?

A pack with only villager voices leaves witches and illagers vanilla. Details shows which entities each voice is made for. Also check:

• Babies only get child voices. Without one, they stay vanilla unless Children without child voice is set to Adult voice, higher.
• Gender: with Share of women at 100 %, only female and neutral voices are used.
• Language: with Only voices in that language on, entities without a voice in their language stay vanilla.
• Who talks: single entities may be turned off.

On a server

• The mod must be on the server. With the mod only on your side, villagers stay vanilla.
• You need the same pack file as the server. Download it when you are asked, or from the voicepack screen.
• Ask an operator to run /tv packs list and /tv debug watch: do lines get said at all?

Some lines are never said

• The entity has no line for that event and the fallback chain ends without one. See All events.
• Only a few entities talk at once (Speaking at once, 3 within 32 blocks by default).
• Greetings come at most every five minutes per villager.

Try a line directly: /tv voice say @e[type=villager,limit=1,sort=nearest] greeting.

The voice sounds like it is in my head

The sound file is stereo. Minecraft plays stereo sounds without distance. Export mono files; the web editor always does.

Still stuck?

Open an issue with your Minecraft version, loader, mod version and the log (logs/latest.log).