This little script will help you to use the woocomerce multiple currencies with our woocommerce product feed manager. You are able to create several feeds with different currencies.

woocomerce-multipl-currencies-support.php

<?php

function alter_feed_item( $attributes, $feed_id, $product_id ) {

	// In this example I have added the "custom_label_0" to each feed.
  	// Custom_label_0 is filled with a ISO currency code as a static value
  	// Forinstance the ISO currency code for the US is USD.
	// uses wmc_get_price() from woocomerce multiple currencies
  
  	//get the correct price in the correct currency.
  	if($attributes['custom_label_0']){
  		$attributes['price'] = wmc_get_price( $attributes['price'], $attributes['custom_label_0']). " " . $attributes['custom_label_0']";
  	}
	
	// IMPORTANT! Always return the $attributes
	return $attributes;
}

add_filter( 'wppfm_feed_item_value', 'alter_feed_item', 10, 3 );