In OrangeCD, it does not matter what is size of your music collection in GB. Only number of albums matter.

Also note that there is a known performance issue that has very easy workaround:
[url]http://www.firetongue.com/boards/showthread.php?t=6901#2[/url]

After you performed these steps, you should see no performance problems up until 100,000s of albums.

Andrei