數位學習系統已發展數年，關於學習的基本功能已經相當完善，然而，對於數位學習教材的製作以及行動學習的部分仍然有相當多的進步空間。
本篇論文專注於語言方面的數位學習，我們所設計用於數位學習的多媒體系統，主要分成三大子系統：(1)錄音子系統 (2)學習子系統 (3)行動學習子系統。在錄製音檔方面，傳統方法就是使用一般錄音軟體進行錄音，而我們的錄音子系統，加入了新穎的設計概念於錄音軟體中，結合顯示題目與錄音功能，並且顯示錄音記錄，使得錄音者可以更加有效率的錄製音檔，而在檔案管理方面，利用自動編檔及管理一致性，使得系統運作的效率提高。在學習子系統部分，我們專注在軟體功能的實現與人性化介面的設計，改善目前數位學習系統的缺點。在行動學習子系統部分，我們將學習子系統的主要功能實現在PDA內，解決了目前一般數位學習系統受限於環境與時間的問題。
在評比中，對目前最普遍的兩種數位學習系統進行分析，並針對分析出來的重要特性進行比較，確實改善了許多項目，提升了整體系統運作的效率。

E-learning system has been developed for several years, and its fundamental functions nowadays are quite complete. However, the manufacture of e-learning teaching materials and the design of mobile learning still have great room for improvement.
Therefore, this thesis focuses on the e-learning for language study. Three sub-systems have been designed as our proposed multimedia system for e-learning, they are: 1) recording sub-system; 2) learning sub-system; and 3) mobile learning sub-system.
For WAVE files recording, the traditional manner records speech by general recording software. Differently from that, the proposed novel system combines the displaying questions with the corresponding recording WAVE. And then we show the records of recording. It could increase the recording efficiency for our recording sub-system. In file management of the overall system., we automatically redact the WAVE filenames and manage the consistence to increase the work efficiency.
To provide more disadvantages of present e-learning systems, we focus on both the implementation of software functions and the design of user-friendly interface for the learning sub-system.
For the mobile learning sub-system, we implement several fundamental functions for our learning sub-system in PDA. The mobile learning sub-system has overcome the problem that the learning environment of general e-learning system is restricted in space and time.
In the system evaluation, we analyze two popular e-learning systems (IBM AllZone and MyET), and compare them with our system on several important characteristics. The evaluation results show that we have improved many items indeed and increased the operation efficiency.

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