As Adam wrote in the sticky post here, the 3.4 beta contains the new "Find Sources" button that will search the network for more sources when the available ones have been exhausted.

It also contains numerous bug fixes & minor enhancements.

These include..

- Setting the save directory and incomplete directory file permissions to be writeable whenever possible, instead of simply failing and asking the user to fix it.
- A small change for retrieving MP3 information which caused an error to be reported on files smaller than a certain size.
- A corrupt themes setting that could have caused an error to be reported is now gracefully recovered from.
- Problems related to alternate locations being added to downloads are now caught before the error is reported and discarded appropriately.
- Errors reported due to too much processing while moving the mouse over the search window are now fixed, by removing the excess processing.
- Problems with "too many open files" or "out of memory" should be alleviated on older java versions because we actively kill certain stalled threads.
- A corrupt port setting could have caused an error to be reported when starting LimeWire is now gracefully recovered from.
- Numerous other minor performance enhancements.

Also included are extra assertions and debug information to help us track down some of the more elusive bugs.

Thanks.