Raspberry Pi Newbie Questions

Hi,
I'm a long time squeezebox user but have never toyed with any Raspberry Pi kit. I have a project in mind where I want to create a squeezebox radio type of player and I think the RPi might be suitable. I have a few questions, I wonder if you guys would be able to point me in the right direction...

- can the Rpi support simple two line type OLED displays?
- can rotary controls and buttons be supported?
- ideally I'd like to replicate the SB classic type of display, so I would use the rotary controls to navigate the menus and push to select the options
- ideally no buttons, but I might need them to navigate backwards etc, depends what the rotary push selectors can do.
- has anyone implemented this type of interface already?
- is the IR integrated?
- can PCP connect to mysqueezebox?
- Can I add an amp board to RPi
- can I run PCP and LMS all on one RPi, and have all my music on the same SD card?
- Finally, how easy is it to do this, I'm more than able with a soldering iron, but do I need to be able to program/modify code as well?

Sorry so many questions, hopefully someone will be kind enough to point me in the right direction.

Thanks