Upgraded MacBook - now having problems playing music

Hi,

I was wondering if anyone on here could help with a problem I'm having. I recently "pimped out" my aluminium MacBook (late 2008). I upgraded the RAM to 8GB, switched the HD out for a 115GB OWC SSD and used a data-doubler to replace the DVD drive with a 1TB Samsung Spinpoint HD. I also installed a clean version of Lion.

Since doing this I've experienced a problem when playing music, both from iTunes and Spotify. The music jitters and skips and it's quite infuriating! When playing video I don't experience any kind of problems with the sound, so I'm rather confused. Obviously I've changed quite a lot so it's difficult to work out which one thing has caused the change. Anyone got any ideas?

I keep the programs on the SSD but media files are on the HD. Not sure if that could make a difference.

If anyone could point in the right direction or has any idea what could be causing it I'd be really appreciative!

Thanks very much!

Thanks for getting back to me.

Music skips when streaming (from Spotify) and when playing from the hard drive. When playing in Finder it still skips. Skips when playing from both SSD and HD. So, basically skips all the time!

Any idea of what it could be!? It's really annoying!