Pronunce 'an L' or 'a L'?

[pray4amy]

Please advise on the right way of using 'an' or 'a' in the following example:

"I need to find an LP player."

or

"I need to find a LP player."

My guess is the 1st one since the L sounds like EL. Am I correct? Thanks a lot.

[mykwyner]

Yes, use an with initial vowel sounds, not necessarily the vowel itself.

An LP player

A UN resolution