Help me write mod rewrite code

[VisualDigits]

I'm using the following code to rewrite my urls and thankfully it's working:
RewriteCond %{REQUEST_URI} ^/([^/]+)/([^/]+)/([^/]+)/([^/]+)
RewriteRule ^(.*) /index.php?menu=%1&cat=%2&artist=%3&title=%4 [L]
but I want it to work for every directory. I tried the following but it doesn't seem to work:
RewriteCond %{REQUEST_URI} ^/([^/]+)/([^/]+)/([^/]+)
RewriteRule ^(.*) /index.php?menu=%1&cat=%2&artist=%3 [L]
RewriteCond %{REQUEST_URI} ^/([^/]+)/([^/]+)
RewriteRule ^(.*) /index.php?menu=%1&cat=%2 [L]
RewriteCond %{REQUEST_URI} ^/([^/]+)
RewriteRule ^(.*) /index.php?menu=%1 [L]


Can anybody help?

I want to achieve the following:
http://www.slack-time.com/music-videos/
http://www.slack-time.com/music-videos/RnB-Music/
http://www.slack-time.com/music-vide...c/Alicia-Keys/
http://www.slack-time.com/music-vide...cia-Keys/Karma

Anybody?

I got the code finally and it's working like a charm:

Options +Indexes
Options +FollowSymlinks
RewriteEngine on
RewriteBase /
RewriteRule ^(.*)/(.*)/(.*)/(.*)/$ index.php?menu=$1&cat=$2&artist=$3&title=$4 [L]
RewriteRule ^(.*)/(.*)/(.*)/$ index.php?menu=$1&cat=$2&artist=$3 [L]
RewriteRule ^(.*)/(.*)/$ index.php?menu=$1&cat=$2 [L]
RewriteRule ^(.*)/$ index.php?menu=$1 [L]