Zina directory configuration

Dear all,
trying to port from a local computer (where it works) to a provider I was confused about directory setting in Zina and I'm not able to heve zina (Zina version: 2.0b22) running.

The istallation is the default one.

If I define as music directory the full path of the demo

/www/myprovider/members/mywebspace/modules/zina/zina/demo

and then as zina files directory

/modules/zina/zina

drupal support informnation page complaints about zina file directory which is wrong (I see two slashes)

http://www.mywebsite.it/modules/zina/zina/demo//modules/zina/zina/zina.js

If I define as music directory the path of the demo as

modules/zina/zina/demo

the zina files directory test passes but as in the previuos case I'm not able to see and play the songs,

In both cases I don't' see the content of the directory artist one demo

also If I try to regenerate the directory and file caches I get the error HTTP 0. /?l=65&id=14&q=music&op=do

Could you help me in understanding what is wrong? locally it was working fine!

Thank you in advance for any help..

(PS I'm not able to set magic_quotes_gpc = 0 in my .htaccess file too)

Drupal 6.15
Modules: getid3, advanced_help, agenda, aggregator, ahah_response, audio, author_pane, block, blog, blogapi, book, content, content_permissions, nodereference, number, optionwidgets, text, userreference, color, comment, contact, ctools, dblog, dhtml_menu, fckeditor, feed_field, filefield, filefield_meta, filter, flexifield, help, i18nblocks, i18ncck, i18ncontent, i18nmenu, i18npoll, i18nprofile, image_attach, image_gallery, image_import, image_im_advanced, image, imce, languageicons, lightbox2, locale, mailing_list, menu, node, openid, path, php, ping, poll, profile, search, flowplayer3, onepixelout, swftools, system, taxonomy, throttle, translation, update, upload, user, views_export, views_ui, actions_permissions, zina, forum, i18ntaxonomy, fieldgroup, advanced_forum, i18n, i18nstrings, token, views, jquery_update, i18nsync

Zina version: 2.0b22
PHP version: 5.2.10
Zina cache directory writeable: 1
Zina Files Directory: /modules/zina/zina
Mysql version: 5.0.77-log
Flash Player requires XSPF playlist format (Zina setting): xspf
jQuery status: Passed
PHP: memory_limit: 128M
PHP: output_buffering: 0
PHP: magic_quotes_gpc: 1
PHP: session.auto_start: 0
PHP: allow_url_fopen: 1
Apache/2.2.3 (Red Hat) DAV/2 PHP/5.2.10 with Suhosin-Patch mod_ssl/2.2.3 OpenSSL/0.9.8e-fips-rhel5 SVN/1.4.2 mod_perl/2.0.4 Perl/v5.8.8
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/533.4
Clean URLs: 0
PHP locale: C

a:6:{s:7:"mp3_dir";s:22:"modules/zina/zina/demo";s:5:"cache";s:1:"0";s:13:"cache_dir_abs";s:23:"modules/zina/zina/cache";s:15:"playlist_format";s:4:"xspf";s:6:"zinamp";s:1:"1";s:12:"res_in_types";s:63:"a:4:{i:0;s:3:"jpg";i:1;s:4:"jpeg";i:2;s:3:"png";i:3;s:3:"gif";}";}