This script exports all radio streams from play.cz to a nice m3u playlist format.

playcz.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-


import json
from urlparse import urlparse, parse_qs

import requests
import lxml.html


def playcz():
    data_url = (
        'http://api.play.cz/jsonp/getStream/{}/wma,mp3,aac/'
        '160/?r=listen.play.cz&callback=x'
    )

    resp = requests.get('http://www.play.cz/radio/')
    soup = lxml.html.fromstring(resp.content)
    radio_links = soup.cssselect('li a[href^="http://www.play.cz/radio/"]')

    print '#EXTM3U\n'
    for radio_link in radio_links:
        resp = requests.get(radio_link.get('href'))
        soup = lxml.html.fromstring(resp.content)

        listen_links = soup.cssselect('a[href^="http://listen.play.cz/"]')
        listen_link = listen_links[0].get('href')
        shortcut = parse_qs(urlparse(listen_link).query)['shortcut'][0]

        resp = requests.get(data_url.format(shortcut))
        data = json.loads(resp.content[2:-2])  # stripping the callback

        title = data['data']['radio']['title']
        stream_url = data['data']['stream']['pubpoint']

        print u'#EXTINF:-1,{}\n'.format(title).encode('utf-8')
        print '{}\n'.format(stream_url)


if __name__ == '__main__':
    playcz()

requirements.txt

requests
cssselect
lxml