Found this, which is good for one way of providing an audible alert when the currency pair price reaches a given level of profit/loss.

You’ll need to download audioplus.mq4 file below, and save to your MetaTrader\Experts\ directory.

You’ll also need 2 .wav audio files serving as the signal to tell you either profit or loss.
These go in your “\MetaTrader\Sounds\” directory.

The inputs to be coded are :

Distance – distance of profit (not pips) for when the Expert Advisor sound is triggered
AudioPlus – the name of the sound file played when the price reaches set profit
AudioMinus – the name of the sound file played when the price reaches set loss

Compile (see add ea to metatrader, if you’re not sure) and everything should work fine.

Download:
audioplus.zip