Hi, Welcome to the Forum peeteecee !
Here are all important links:
-A few rules and useful forum instructions
LMMS are garbled and songs play at very slow speed with garbled sound.
One of the easiest to fix :)
Go to Edit| Settings| Click audio configuration.
(Simple DirectMedia Layer as audio interface.
Shut down and reopen LMMS
Let us know the outcome :)
And if it diddent
please post your:
* Name of your Operative System
(Windows/ Linux/ Mac) And subtype ('Home' 'Mint' '10.13' aso)
* lmms version
* hardware specification (ram & soundcard is the most important)